Ok, I'm no expert on tanks, but here was the scuttlebutt.
The members that I spoke to were split about 50/50 for and against their tanks. Those who had them were very happy with them. Those who had traditional tanks were skeptical of frameless tanks. The boss claims to have a 0% failure rate. He has always been a straight shooter as far as I'm concerned.
They had a few on display. They are very nice to look at, but any of the traditional saltwater gear detracts from that look very quickly. It tends to stand out. So, the way they had it was with their lights hanging from the ceiling, as opposed to sitting on top. They dont have that "lip" that holds up a lid of any kind. I wouldnt recommend anyone put anything on top without some modifications, plus it would take away from the beauty too, in my opinion. Also, their filtration systems were hidden below it and they used clear, glass tubes (which they also sell) to draw the water out and then return it after being processed. Bottom line is, the only parts you see going into the tank were transparent. This is not required, but I could only imagine my black, nasty powerheads and hoses uglifying the tank.
I think the tanks are beautiful, but would take extra time aquascaping to maximize it's potential. This extra effort sounds like fun to me. They are not too expensive, but it could easily get that way.
I hope this helps.
Ben