Mine arrive today. Plugged it in and detected with no problems. Checked helios and all buttons and Axis are shown.
Have yet to buy all the bits I need to properly test (ribbon cable, connectors, switches etc)., but all looks good so far. I have a pot somewhere so I will use that to do a quck check on the axis.
Thanks Niclas - this should prove to be a very tidy solution as I can get everything I want to connect on this one board.
I will keep you posted on how I get on, but it will be a week before the bits I need arrive.