I considered tubeless for TCR and I'm kinda glad I didn't bother. I think I'll maintain that position until circumstance dictates otherwise (ie. I've run out of tubes and patches in Bumfuck, ID). Hmm, does the race go through Bumfuck? Does it go through Idaho?
Yes. Also theres a lot of shit on those shoulders, wire from blown out tires, glass etc. I'd seriously consider tubeless.