It's set to slave/receive clock... I'll try it on USB sync to see if there's some oddity in the matrix but it's no biggie if it's a glitch.
I've just noticed on the 3rd (or 4th - it's a steep curve!) pass of the documentation that I can route the midi keyboard to active track as an option... nice! I know the Cirklon has built its own mythical status partly through long waiting lists and £3000 resale values on eBay - as well as it being great hardware, no doubt - but I find it hard to believe it can offer more than this beaut :)