Yeah the design was class - single colour, ergonomic, compact.
The stick felt a little too slack though (I seem to recall adjustment didn't work either).
I think the only FULLY compatible controllers were the Commodore CD32 pad and the Honeybee/Competition-Pro CD32 pad. These had 4 fire buttons, 2 shoulder buttons and a pause button. A few games made use of all of them, ADoom lets you strafe with the shoulder buttons and AmiMasterGear emulator lets you quit to Workbench with the pause button.