The vast majority what @scottishsurfer has written reflects my experience with the Prime CI's, although I have had no issues with ratchets.
They are solid. Couple of additional points that may be of interest to some:
1. There is no adjustment to allow highback rotation. To be fair, I don't know of a binding on the market that will allow highbacks to be rotated enough for high angles anyway (I run +30/21).
2. I doubt you could fit a boot much larger than my sz11 DriverX without significant toe overhang of the footbed. This will be more of a problem if you decide to convert them for splitting, as you have to trim the footbed to install the tour pins.
3. I like to run the toe strap around my toe, rather than on top. In this position, the lower part of the strap is not snug against the boot and I have had it snag and pop the toe strap off. Could just be the interface with the specific brand of boot.
4. I have yet to try mine, but there is a factory option to add a quick-release "third strap" (flex lock) to provide some additional lateral support which some might find useful. Strap releases when angle rachet is opened.