Getting a bottle of something that's on tap is definitely hickish. Also rednecky. You shouldn't have to specify if something is on tap. It should be assumed that you're not a hick or a redneck.
In my experience, the elite seems to always get a bottle when there are beers on tap, especially when it pertains to domestics. They seem to think a bottle of Miller Lite is more elite than a mug of ML. Actually, I kind of agree with them because domestic unionized beer companies do something bad to the beer when they put it in kegs. I dont' get them because I don't want to sacrifice the extra 4 oz.
Now, when people order draft micro's or imports - that's hugely hickish and/or gay.