I've not ridden one, but I do remember being impressed by them when they first came out - both on paper and in the flesh (the bike shop in Corrimal/Fairy Meadow across the road from Fraser's was a dealer).
Then all the tests said the same thing: poorly set up and soft core. I'm as cynical about the accuracy of magazine tests as anyone... but when the magazines all agree with each other, and the company disappears soon after... Well...
Each to their own, but I can think of cooler ways to waste money and break your own heart (eg: a bolt-together VOR).