I have the Barkbusters around my stock, brittle, junk. Totally worth it. OZ Tim on the Duc.ms board had a good thread on attaching the stockers to the barkbusters for protection and keeping the signal lights.
The suspension is very nice on these bike, I am very impressed. I also book marked the rim repair places Sock mentioned, just in case. :(.
I am trying to run about 20% dirt, to 80% pavement. Boreas pass today.