Has anyone every put a 29er wheel on the front of a Rush 600 Lefty? (and leave a 26 on the tail)

I have an 06 Rush 600 and my bud suggested that I might consider doing it, and the LBS just confirmed it is possible. Said you inverted the stem and limited the travel slightly.

Now I need to know--have you done it.. and if so, was it gnarly or what?