Are Gran Prix Audio Monaco Stands hot or not?

A few years back, it seemed that everyone was buzzing about Grand Prix Audio's F1 inspired, carbon fibre supported and modular isolation design.

So what happened? It seems like there is little demand to buy these if you look at Audiogon listings and/or auctions.

Are reviewers, manufacturers showing off their latest gear at shows, and thought leading audiophiles still using GPA racks, or is there a new kid on the block?