Yeah, I thought you meant that. I have not seen anything like that in the gaming accessories industry. I had thought of trying one myself, just because..If I do, I'll have you on mind ;-)
Ask to SteveS at insidesimracing forums, he offers DIY parts for a wrc paddle shifter on shapeways and I supose that he offers "customer" version too on his website. http://sim-racing-engineering.com/Parts.html