Yes, I do this with my students, to make sure that they know the pattern itself, and not just which wall to face; for the same reason, I turn them around in the room periodically. The funny thing is, some of my students are better with their eyes closed than they are if they turn around - which means we need to turn around more; with their eyes closed, they can see the walls they usually face.
We also have blindfold patterns at some of our tournaments, as an extra event. The funniest rendition of blindfold patterns I ever saw at a tournament involved a BB who got drunk the night before - he said he didn't have a hangover, but the second he put the blindfold on, he lost his balance.