I've voiced my opinion on HJ oil filters a few times.
My two cents - the oil filter kit for the J (and other KF products for that matter), is just a "by-pass" filter. It's a side path that gets some oil sloshed through it but not part of the oil circulation path so it's very ineffective. To me, it's one more thing that can and often does, leak and make an awful mess. That's why I won't install one on any of my cars.
I change my oil every spring, usually it has between 500 - 700 miles on it, and not that dirty when I change it.
I just think that draining the canister and installing a new filter and trying to get it to seal is a lot of work for a feature that provides little, if any, benefit.