I stopped in Phoenix for 8 hours to visit family, and I hit the US Airways lounge both on the way in and the way out. The first girl that greeted me wasn't the best, as I presented my Priority Pass and was turned away. I realized my AmEx Platinum would work, so I returned and she somewhat rudely said she didn't know I had that. I never accused her of anything, though most Priority Passes come from AmEx Platinums, so perhaps she should have suggested it.
The night staff was much more pleasant, and I got caught in a good conversation with them about SNL and other US Airways business. Unfortunately, the lounge snacks had been picked dry before closing, but I did have a quick coffee.