To be honest of the 15 bike shops in my area, you will not be given the bike to ride except in the parking lot. If you want it for longer you can ride a demo model (if they have it). Even when I lived in Vancouver no shop would let you take the bike for a real ride. For several reasons I would assume

a) you could 'test' it and damage it.
b) show bikes usually aren't ready to ride. Not tuned up or even completely built
c) Stolen bikes are a crappy thing and dealing with insurance is even worse.

I would never hold it against a shop for not letting me ride past the parking lot.