I've seen them around. I personally dislike the skinny points, and the long handles, and the bulky ringwork, and the wood ferrules that are laminated in a hundred different ways... it just doesn't look good to me. If they play well, that's great, but to me the cues look poorly balanced in terms of design.
Also, the whole "extended tip contact time" is baloney from everything I've read on the subject (keep in mind I'm no expert). It reminds me of when Meucci and some of the pro's were touting zero deflection... they had to adjust that claim pretty quick. I love the passion and the curiosity displayed by the CM, and this is NOT a personal attack. I have no agenda, it's just a personal opinion on what I feel makes a good looking cue, and why wouldn't buy into the Barioni sales pitch on LD shafts. I've seen him at tournaments, and he seems like a nice guys, but it's not my cup of tea.