Thanks a lot! It's a shame I can't actually try a Thorowgood! Feels risky to just order a saddle online, although I might just have to do that. We only have one decent tack shop, which mostly carries saddles for the narrow, high withered types, and only one saddler, who is actually not that good and very expensive. But I've crossed Teknas out, at least. I'm also not considering Wintecs, as I've read one too many poor reviews and experiences about them, although I realize they might fit my boy by width.
I have come a long way, to surrender my shadow to the shadow of my horse.