I have a current post transition Barrel, but did have one of Louis early ones. Have been kicking around ordering a cz 455 wmr barrel. There's certainly been more chatter as of late about some function issues that you didn't see pop up five or six years ago. But it's a 200$ aluminum sleeve barrel, and nobody else makes anything close for twice the price. He has a good reputation for ironing out issues if they do sprout up. Usually it's something to do with headspace, an issue it seems intrinsic to the 455/457 design more than any given barrel company.
I guess the short and long of it is I'll probably be ordering one within the month so my dollar is yeah give it a try.