I've been climbing on it for the last couple months (though not a ton of climbing) and love it. Great hand, no milking, runs fantastic with 8mm armor prus and a hitch hiker. I'm sold. I have a 300 foot length which honestly doesn't come out of the truck that often, and I'd totally get a shorter length to use more regularly. I've climbed on velocity, escalator, poison ivy, htp static, the fly, among others, and I think the cervian is a great combination of good hand, the right amount of stretch (not too bouncy, but it has way more give than something like HTP or escalator). If you get some I'd be curious to hear what you think, as I don't know of anyone (other than Dave) who's been working on it.