There doesn't seem to be a lot of interest in revolver kits regardless of who made them, so it may be difficult to find someone with experience to comment. Frankly, building a revolver from a kit isn't very demanding - sand, stain, fit and finish the grips and then polish and finish the metal is about all there is to it.
I have built (many years ago) several CVA percussion rifle, shotgun and pistol kits but no revolvers. All the kits I've built have been complete and required a little hand work, the only challenges being in finishing the inletting for the locks and barrels, something the revolvers don't need. I have no complaints about the CVA kits I've worked with so far. They are not the very high quality, fancy wood, expensive locks and barrel kits that one can get from specialty shops now, but they are very functional and satisfying to complete and did not cost much.
These kits are inexpensive enough that one could take a chance, try one out and maybe publish a review.