I've had the Fat and an overwound Nocaster (I think it was around 11.5k). I did a video demo of it somewhere on my channel.
Honestly, I liked the Fat better between those two...but I think I would prefer a regular Nocaster or 51/52 to the Fat. It depends what you're looking for. Now I like lower wind A3 pickups (I just got a Don Mare Hot Bakelite), but when I had the Fat Lion set I was looking for good pickups for jazz mainly and they worked great for that. The Hot Bakelites are more of an all-around lifer set.
I liked the Fat Lion King better than the regular Lion King. I was looking for a particular thing with the FLK and it nailed it. For a more traditional tele neck pickup, the LK wasn't quite there for me. Don't get me wrong, it was a great pickup, but it wasn't what I was looking for. If I were buying again today, I'd probably look at the Wolf, She Wolf or one of the Lioness models.
Rob has so many great pickups. I'm sure you'll be able to find something that works for you. Call or email him. He's really approachable and helpful. At the end of the day, sometimes you just have to pull the trigger and try something in your guitar, play with it for awhile, experiment with pickup heights, etc and see if it fits or not. I've tried a LOT of pickups, but I REALLY like what I have now. In my other tele I still have the FLK neck, but have a Bootstrap bridge wound similar to a Fender PV '64. Hard to go wrong with any of those three winders (Mare, Bootstrap or Cavalier). All great guys and great pickup makers.