Scientific fact: It's good. Really good.
I've not had a great deal of a play, but some hooning around Cheshire's finest backroads in M confirms it works very well indeed. Seems somehow smoother, which I didn't expect, almost like a seamless CVT in D.
Main thing I've noticed - when getting near the limiter, it felt like power tailed off. Then when in the next gear up, there'd be a tiny bit of lag. I thought it was just the K03 running out of puff.
Now, I realise it makes power all the way up to the limiter. You shift and whammy, instantly it's back on full power. No lag... who needs a fancy WOT box
This is going to be very good on the track.