Aren't emulators kinda slow? Also, does it retain full functionality of all features and control as well?
Its true it is a bit slow and in some cases it's funtionality and performance of the features and controls were not complete , anyway its just an option while others were waiting for the ios version to be released.
There you go, that's what I thought so too!

I had some bad experience before with emulators, it's cool for nostalgia (for discontinued platforms), but not so much when actually using it.