I recently ordered two pairs of the Inventory Clearance breeches from Tropical Rider - one with deerskin and one with lambskin. Both are extended patch - not full seat (would have preferred full seat, but these were clearance at a price too good to refuse). They should arrive this week. I've only had deerskin too, so I'm curious about the lambskin.
I have several pairs of both deerskin and lambskin full seat breeches from TR and I like them both. I think the deerskin might hold up to wear/tear a little better, but the lambskin is softer and a little more comfortable to wear. I have worn both types very regularly for at least 2 years and both kinds are still in excellent shape.
Just bough clearance full seat lamb skin elite breech (half off was too good a deal to pass) because my dh just machine washed and machine dried (with fabric softener) my only other actual leather full seats...... Grrrrrr