@Than_Bogan - I love trying new skis, for fun and yeah, for knowledge and possibly helping confirm the current or go-to ski is the right one. Friends joke I have commitment issues.
Also, a few on that list are one-time rides. Skis being demo'd by friends, etc. (T1, Arc, NRG, GT, '18 Vapor at Nats) Yes, not full demos but nevertheless fun and useful.
Actually of those demo'd I haven't send many back. SIA and skier friends are an awesome thing to have. :)