Though I don't own a Trim, I have looked at them in a couple different boutiques and my experience has been that many stores have them, just not on the floor.
Once I asked, they were more than willing to talk colors, leathers and availability, bring out options and even discuss transfer possibilities from other stores. Essentially, an experience completely opposite from shopping for a Birkin!
I would think it highly likely that an SA might be helpful over the phone on this one...