I would think in the West, where people wear western hats, and vests (including for dress up) it wouldn't be nearly as obvious you are packing. Wearing a vest doesn't necessarily say you are carrying. Not wearing a vest doesn't say you aren't carrying either. Personally I wear my shirt outside, untucked but I think it would be nice to have a vest so I can occasionally (for dress up) wear a vest...and carry.
