Just picked up my Wrangler from the dealership this afternoon. Had the Mopar heated seats installed. Absolutely love them already! I drove home from the dealership with the windows down, the back window rolled up, and the Sunrider top open. It's about 55 degrees here, but with the seats blazing I was pretty comfortable. They put out a lot of heat. I would say they take a little longer to warm up than the heated leather seats I have seen, but not too bad. I guess cloth seats just don't transfer the heat as quickly as leather. But no big deal, takes maybe 2 minutes to get warmed up.
Would definitely recommend these to anyone who is thinking about it. Cost was $295 for the part. Install labor was $300. Jeep is running a 10% coupon right now so it cost me right around $550 out the door with tax. For me, well worth it.
Here are a couple photos of how they installed the switches for anyone who is interested.