AXM are not fussy. If you have a pulse, they'll let you in.
Polo are very fussy. Clothes don't matter so much, skinny jeans and a T-shirt are fine. They care more about your face. The bouncers will either never give you a problem, or they'll never let you in. No in-between. If you're worried, go on a Friday before 11PM and walk in the side door at Riding Room.