The pattern (160x160.3mm) matches the TM Cougar joystick, for what it's worth.
I.e.: You can also use other mounting plates designed for that device, given they're sturdy enough. (Kinda what we did at MT, once we realised that match.)
I would if i had the space for one would love a dedicated simpit seperate to my desk so i dont have to mount/unmount all my stuff all the time :CleveDerp: