Had not run across this one before! Is is spectra/ dynema safe? breaking %?
I use it on my reel line which I believe is 3mm dyneema. Its whatever Ulusub sent with the gun. I clip onto that and I have had no problems, however, I have not had a fish take any substantial reel line out either.
I wouldn't use it on thin spectra but I have not tried it either. I usually run 65lb spectra backing on my fishing reels and I tie a bimini twist to a reverse arbor (I think that's what its called) when splicing to mono.
I feel that the perfection loop is a stronger knot then the surgeon loop and is easier to tie regardless of test line I use. A local tackle company sells their lures with leader premade and they use the perfection loop in 300 pound line for trolling. I have no experience with this but they swore by it. I figure its worth a shot if your not able to crimp your leaders. Plus its a much cleaner finish then the surgeons knot.
I sadly don't have any statistics as to breaking strength but if you play with it please post up results.