Funny you should mention the dual strike.  I just got my first one, and the other is on the way.
I got to thinking about my question.  The beachhead games, are controlled by the mouse.  So I have another question, has anyone seen a yoke hacked into a mouse? Or maybe a yoke, not necessarily "hacked," but a homemade one designed around a mouse?
Oh, and I didn't bid quick enough on the last set of twistygrip plans on ebay.  It went for like 5.50 two or three days ago.  But w/ shipping the winner could have got them direct from 
www.twistygrip.com new.