So far it actually works great with noticeable lag, but my phone lagged in the first place anyway (with only 8Gb memory) so I don't really mind. I haven't tested all my third party apps yet like Facebook etc. but if any of the apps didn't work I shouldn't be disappointed because I expect it not to be perfect anyway.
Other than the lag, I'm really happy with it so far! :D
If you're willing to take the plunge with me too, you can watch a vid on how to do it here: