Go ahead, all iOS apps work that i've tried. Lots of cydia ones don't work but most important ones do.
Only way you'll have problems is if you aren't registered as a dev or you have no idea what you're doing. Its really really hard to mess up regardless of beta status.
However, Safari keeps crashing on me every so often, I'm sure they'll fix this in the coming betas but still thats the only problem I've had.