I was looking at some shafts by this company---the guy bends them almost 180 degrees without breakage and claims that they will remain perfectly straight after that. I am just curious if anyone has had any experience with these? Are they heavy enough for trad? And if they are that flexible, how would that affect the spine weight?

Very interesting. Where did you see the info on these shafts? I assume they are carbon?

read the feedback from his buyers...the shafts are crap