Although I have a set of custom seat covers already, I highly recommend that you jump on this offer. I have used mine for about 60,000 miles, and I'm sure they have saved both wear and tear and a couple opportunities to damage the leather.
A couple other things to consider for the new covers:
1. I added a pocket on the inside of the cover to hold a lumbar support air bag, which I bought on Amazon. It has a squeeze bulb, like a blood pressure cuff. It helps with comfort to both inflate and deflate it occasionally on long trips.
2. I thought about, but did not install, seat heaters in the covers. I generally run warm, so I didn't think it was worth the trouble. If you (or your copilot) like a warm backside, consider adding that.