Thanks Al. Yeah I weakened and spent money I didn't really have.
Only had one evening to play so far. Mixed results.
1: Couldn't for the life of me get the computer to recognise the unit. I have high hopes that the FB group has the solution.
2: extremely simple to use via the touchscreen. I've already built a couple of very useable synth patches.
I have an extra footswitch on the way and an expression pedal to play with, there's a YouTube video about these extras which looks really cool.