I've had pivots and knee bindings and STHs fwiw. The Knees aren't really comparable because you compromise a lot for a questionable increase in safety. It's just whether you think lateral release makes sense as a safety mechanism and what compromise you're willing to make. The general consensus on newschoolers is that it isn't worth it, which is totally legit. The rationale does make sense to me in theory so I do use them on my main setup. Knees are heavier, harder to setup and don't cover as high of a DIN range. Even the carbon model is significantly heavier than other bindings. I would never ski knees if you hit rails, they'll release on you left and right since the same mechanism that laterally releases, you need to keep your ski on, on a rail. Though they were never designed for park in the first place, despite what their marketing videos say. I have had a toe piece explode on me as well hitting jumps which was covered under warranty.
I had a bad fall last year overshooting the landing on a kicker and ended up with a grade 2 mcl tear that I'm pretty sure would have been worse if the bindings didn't release laterally.
Anyway, what's my rationale for using them? Despite the compromises with weight and finicky setup (and the toe piece exploding on me), I don't hit rails and they are not so awful (in my opinion) compared to pivots or STHs that I've used. On my current pair I've got over 70 days on them and haven't had any issues since. I don't ski any differently on them compared with any other setup. If there's a 1% chance they will save my knee from a worse injury then, it's worth the weight/stack height and trial and error getting them setup correctly. Just my 2 cents using them for the past few seasons.
Here's a pic of the exploded toe piece
**This post was edited on Jul 18th 2020 at 3:47:21am