Neal, I've tried the leather and vinyl repair kits from the parts stores a few times. Could be my own lack of skill with such things. But I never could create a repair that was even close to seamless. Always badly obvious.
On the rare occasion I've needed something repaired that needed to be done well and look good I don't even try to do it myself. Call a local auto dealer's service center. They have it happen with new cars. Unavoidable when families do test drives. Ask the dealer who they have do repairs. Most of those services go to the dealership as a mobile repair. But you could still take the saddle to them.