It doesn't work well with Google's account switching yet. I happen to have 2 google accounts (personal and work) and was logged in to both. With mail and docs

It doesn't work well with Google's account switching yet. I happen to have 2 google accounts (personal and work) and was logged in to both. With mail and docs I can switch back and forth between them. In Google Play, there wasn't a way to switch from the "default" account to purchase music unless I signed out of 1 and signed in with the other. I'm sure that'll come along later, though. I realize my usage is an edge case.