I don't doubt they haven't had a major failure in 6 years but I bet they haven't given one to a trials rider who actually uses the bashring. It would be like running front freewheel without a bash and then gapping to a rock onto the freewheel itself- all the forces are going straight into a load of planetary gears, pawls, bearings etc. and I very much doubt it'd last more than a week under proper trials conditions.
Oh yeah, and it's also butt ugly, looks quite heavy and is also pretty much useless on a trials bike! On a 'proper' street rig, all mountain bike or whatever I can see a small use for it but on a trials bike (even a 24" street-trials) I'd rather just run a rear mech and a couple of gears at the back... I just don't get it!