Regarding the market for a synthetic saddle:
I think the early Wintec saddles did a good job of creating a negative stigma in the H/J world that I’m not sure they (Wintec) will ever overcome. Their earliest saddles weren’t durable. Most were black and looked synthetic, not to mention they were predominately all purpose or dressage in style. When Wintec finally came out with their first generation close contact saddle, while it was almost indistinguishable from leather with a rider in the tack, that sucker was slippery! So slippery it made it hard to ride in, especially over fences. Changeable gullets boosted their popularity, but problems with early CAIR models reinforced negative impressions.
Wintec has addressed all of the above problems to put out quality, balanced saddles for the money. But I still don’t think they will ever overcome (some) folks negative opinions of synthetic materials.
Opinions might change if a popular high end saddler were to create a synthetic product, but I’m not sure there is enough demand at this time. And then there’s the “artificial Christmas tree” paradox: manufacturing of artificial Christmas trees poses greater environmental threat than the cutting of natural ones… so does the same apply to synthetic saddles? If so, does “cruelty free” offset the environmental impact? I don’t know the answer, and of course, this is all speculative.
But I really like my Wintec AP & dressage saddles. I plan to add a Pro Jump to my collection when I have extra spending money.