There's been a fair amount of banter on this board as well as other RR boards regarding the No Cut vs the regular Cut type.
Remember you're not protecting the fairing, you're trying to protect the frame. Fairings are very cheap to replace compared to the cost of replacing the frame. Basically, if you bend the frame the whole bike is a write-off. If you don't like the idea of cutting your OEM fairing invest in pattern replacements - get it spayed to whatever colour you desire and hang the OEM's in your garage or attic.
BTW, metal sliders often result in the slider "digging-in" to the pavement in a crash, then causing the bike to flip. Just a thought.
I installed Woodcraft on my '05, and yes you gotta cut the fairing - no problem. These are the best frame sliders I've ever owned. BTW, Eric Wood... the Wood in Woodcraft is a nat'l ranked racer. Wanna bet his product gets "Field Tested"?
Cheers