Good on you for buying something while there.
I never believed people practiced in the store until a few days ago when I went in to see a strat and ran into a whole band in there basically practicing for a gig. They told the manager that they were there to 'test out an amp that they were thinking of buying' but they were straight up using the store as a practice space, lol. Had a guitar player, a bass player, a singer, and all the girlfriends. Trading licks, riffs, and goofy guitar player 'faces'.
It was near closing time so when asked if they needed anything to check out, it was 'oh no, we aint buying anything'. Yeah.
I spent 15 minutes with the strat hooked into a Marshall then got my lil pack of Optiwebs and bolted. On a side note, I kinda like those Optiwebs. Feel totally non-coated to me (although not quite as bright as the Nanos). Now I'm just waiting to see how long they last...