THIS. Exactly what I was saying. Endurance and related sports are the only equestrian sports I know of where a veterinarian checks and scores the conditon of the horse before, during and after competition. Endurance is not a sport where iffy fitting tack would be OK. I don’t compete in endurance but I do go for lengthy rides and my opinion is if it works in endurance for 50 - 100 miles it should work for my 15 or 20. I would guess that Endurance riders HAVE to be educated on proper saddle fit. Why do people get the idea that they just don’t care and will throw any old saddle on Dobbin and head out for a 100 mile ride? If treeless is successfully being used by endurance racers then that’s the wagon I want to ride on.
Edited to add: BTW I DID work with a professional saddle fitter when I purchased my Sensation Treeless Saddle.