No you cannot. The pocket details are different. You can't wear another brand if there are noticeable brand details like pocket details. You also have to wear the Triple As which are very specific and don't include Hco brand items. If you just got hired, and when there are new triple As, you get a 50% discount on a pair of bottoms and 50% off 2 shirts as well.
I work at Hco and if you wore A&F jeans there you would be sent home. One time I was wearing a pair of jean shorts from the summer 2012 Triple As when it was like the first week of the BTS (back to school) 2012 Triple As and there were different shorts on the approved looks. They looked almost identical, but my manager noticed. Yeah. It's that picky there =\
Maybe other stores are more lax, though. My store is in a very upscale mall and is one of their best selling stores. We are known in our area for being one of the best. At a normal A&F or Hco they might not have the same standards. But I wouldn't be surprised if they are the same. Feel free to ask your manager, but I wouldn't do it without asking if you don't want to get in trouble.
Hco employee for 2 years now