I did the CSOB version with the Sunrace lever. It has a hint of detent, but really moves like you describe.Just did the Teraflex today. I faintly hear detents if I hold it close but it feels linear when I tested it, much like a friction might. No action for the first several degrees of pull. And I got lucky, I left just enough slack in the loop so it can be slid off the nipple when throttle is fully closed. Didn't max it out for rpm but got it well above 2k at a standstill with plenty of paddle remaining.
Off road testing will wait until I determine suspension changes and button that up.
It works great, you’re gonna like it. I used it a lot this summer and it’s really convenient.