jhautz,
I made a custom clutch back in January and it was definetly not a waste of time.
Here's the link for those that don't remember or never saw it:
http://www.rc-monster.com/forum/showthread.php?t=5265
Anyway, I gave up with the project because the Losi 8ight did not have enough room for batts with the configuration I had as well as the motor temps were pretty high. I never tried running the shoes in reverse though.
I'm going to give this a try again with the Electiclutch because this adapter seems a little more freindly than my custom setup.
I guess I should have put a patent on it back then :)