After a rousing few rounds of "Open Carry is scary and the same as brandishing" v. "Open Carry is tactically superior" v. "Open Carry is inherently a political statement, intentional or otherwise" v. "Open Carry is more comfortable" the urge to reach for and liberally apply the wisdom stick is a mighty force that thus far remains vanquished.
First off, if it's holstered - it ain't brandishing, you hoplophobic maroon. Neither I, nor any other law-abiding gun owner are responsible for the care and feeding of YOUR irrational phobia's - either to pay for your much-needed therapy nor to pander to your loud public and political maunderings on the topic.
Your insistence that gun owners conceal their existence is neither more nor less reprehensible than insisting that black folk stick to using "colored" water fountains, ride at the back of the bus, or avoid sharing a cafe with the "decent folk." It is no better than denying women the vote or the right to own property. It is not significantly different than laws barring LGBT businesses from cities, LGBT folk gathering in groups of three or more, or that old classic (are you listening, Atlanta) targeted bar raids on LGBT friendly establishments.
Reviving the tactics of bigotry and fear is to essentially revive bigotry and fear and point it in a bright shiny new direction...while emanating the same foul stench as the Klan and their fellow travellers.
Moving on to "Open Carry is tactically superior," specifically the "it's faster" argument - while the more rational of us that carry recognize that - like a house fire and fire extinguishers - that stumbling on a encounter requiring major violence (barring some really bad choices regarding "don't be where the trouble is") is a relatively low order probability.
Open carry may, indeed, be "faster" - but at a cost. With Open Carry one not only straps on a fairly obvious "shoot that one first" badge on an involuntary basis (c'mon, even the *dumb* criminals can do basic risk analysis), but one straps on an annoying title - "Ambassador."
The "Ambassador" title happens because you are "out" or "open" - i.e., folks see you are carrying and, with no further input from you, hold you forth as both the expert and example on all things gun and gun owner. You don't get a choice in the matter beyond choosing whether you are going to be a "good" example or "bad" and how much grace and diplomacy you exhibit in doing either.
Which, in turn, leads us to our next point on the analysis - Open Carry is an inherently political statement whether that is your intent or not, no less than being an out gay man is a political statement. Simply by *existing* in a way that the public notices, you make a statement.
To the extent you are "non-scary" you undermine the bigotry sown by the anti-gun or the anti-gay and their theme that we (hurry up and decide which demographic we're discussing) need to be regulated and harassed for "our own good" and that of all those around us. See the paragraph above - intent is not required... this simply comes as part of the package of being identifiable.
As a side note, if you open carry I'd encourage planning "ambassador time" into your daily schedule - from talking guns or law with the local cop, to explaining guns to the little old granny that expresses an interest, to dealing with the hoplophobes and so forth. Why? Because it is one of the best possible things you can do for the gun community if you Open Carry. You're a self-nominated ambassador - might as well do a halfway good job and being friendly, informative and non-scary is a big part of that.
Finally, I've carried concealed and carried open (more concealed than open, but I'm comfortable either way) as a private citizen. The comfort thing depends on your equipment and your body more than concealed v. open - if you have a good holster and a gun that fits you (no, yet again, one size fits all does not apply). There are good and seriously fouled up concealed holsters; similarly there are both good and seriously fouled up open carry holsters. Shop around, your mileage may vary, and you WILL end up with the "drawer of holsters" filled with the "didn't quite work out" candidates.
As a final aside, have a bit of class. Open or concealed, suit your holster to your task. If you're going out for a night on the town wearing a tux your choice should be significantly different than the holster and gun you'd haul along for a fine afternoon hunting hogs on foot in the Texas brush. This is *more* important if you Open Carry, what with being visible and all. Remember, you made the decision to be the "involuntary ambassador" when you decided Open Carry was the mode du jour.