Originally Posted by tim
The only major difference is in the flap length. AP saddles have a slightly longer flap than jumping saddles do, but a shorter flap length than dressage saddles. There are other differences but they're not big.
They're not hard to jump in either, and in fact, if you're tall like me, you might find an AP saddle more comfortable to jump in than a jumping saddle as it will accommodate your legs better.
Just a few months ago when I was looking for a new custom saddle, I actually rode in a AP saddle which gave me a fantastic position. I have always really disliked them BUT depending on the make some will give you a more decent position than others that's why I say to take a few home if that's what you want, and try them out.
I will try to look up which saddle it was I had tried. I'll post it if I find it.