Yep. The guy worked a bit into the bridle he was working on (they make their own bridles there). It didn't really change the appearance of the leather (at least not that I could tell), other than to make it more supple.
The only place I've found it in my area was at that one tack shop. But, that's not saying much, since I live in a tiny town. Lol
I will try googling it tomorrow when I am not doing fifty things at once. Haha I just got a new bridle too that could use some softening even though it is pretty soft already. I just wanna keep my saddle "healthy" so to say.
My preference for engish saddles is glycerin saddle soap. Using a damp/wet cellulose (not foam) sponge rub onto the glycerin until you can see it on the sponge and wipe onto the saddle. Don't have the sponge dripping wet. This will do an area the size of the seat. Rinse your sponge and add more soap and keep going. Then rinse in clear running water, squeeze and wipe to remove soap and dirt. Lots of rinsing. Allow to dry then buff with a soft cloth. You have not only cleaned the leather but added moisture as well. English saddles are tanned differently from western and seldom require oiling.
I'm a fan of Horseman's One Step. It conditions & cleans at the same time, so it's a lot faster than soaping the saddle & then conditioning it with 2 different products. You just apply it with a slightly damp sponge, then wipe the saddle down with a soft cloth afterwards.