I rooted my myTouch 3G Slide with the "SLIDEMEROOT2" image and it
reverted to pre-OTA but all the apps work fine. Of course that's a
different animal since it's (still) 2.1. I didn't want to mess with
CM6 since I mainly just wanted wifi tether. Once (if) 2.2 comes out
for the Slide I'm hoping they will allow wifi tether in the stock
image. Probably not, though.