So how about the "more predominantly gay" gyms in NYC, LA, Miami, Palm Springs, SF, etc. Do guys there cover up and change their underwear while wearing a towel?
I just found a gym a couple days ago (Miami area) that I'll be joining once my summer out-of-state contract is done. During the tour, I noticed the guys tend to be very comfortable being naked in the shower and locker room. It's a privately-owned yet very large gym where everybody knows everybody...been in business 33 years, and most workers have been there over 10 years. The personal trainers all have college degrees in Kinesiology, and a few of them are National Pro BB'ers. The owners still model fitness professionally in their 50's, and their son is very hot and nice. Oh and it was voted "Best Gym in Miami" by New Times mag in 2009.
So yeah, I now know of one gym in the Miami area that has guys who are comfortable with being nude around other guys, regardless of sexual orientation.
PS. It is not a "predominately gay" gym; but it is very gay-friendly. Then again, a non-gay-friendly gym around here wouldn't last very long.