This is as good as its VST counterpart., i like the enhanced UI. especially the keyboard/touch pad, my only quip is that the ipad version is prone to occasional bouts of audio clipping.
having said that, the fact that ones handwork can be done on the go then exported to ones computer for further work within say, ones studio environment is useful here as this will allow further refinement. and definitely will make the workflow more fluid.
(as an aside, rather worryingly is the greenoak site is down as of this review)