I have had quite a few of these rims. I had 4 of the original version, which are all broken now. I got almost one year out of the rear on my trail bike and the front lasted til I switched it to my hardtail and cracked it in the bike park (along with the rear). The other one cracked in the bike park on the front of my DH bike.
The following year (last year) I had the updated DH version that look like the Enve profile. I used them all season on my trail bike with no issues. They now belong to someone else and were very straight when I sold them. I broke 4 of them on my DH bike in the bike park. One front and 3 rear. I rode an awful lot though, and mostly on the roughest tech trails and not so much on jump trails. I suspect I would have wrecked 3 or 4 alloy rims anyway in that time.
The hookless rims never burp, and I have always had a really bad problem with flat tires and these rims have almost (but not quite) eliminated that for me. Used to flat 25+ times a season, now down to just a few. I set mine up tubeless with gorilla tape.
I don't know if I could honestly recommend them for bike park use for anyone else. I have in the past and then they have broken on them, so I feel bad about it. But I run 38psi rear and 30psi front so I could have better results because of that. No question though for trail use I recommend them to anyone.
I really like the rims and now have the 650b AM version for my Nomad and the 650b DH 35mm ready to build up for my DH bike. They feel awesome. Doubt I'll ever go back to alloy.