I was searching around for info on those cabs a week or two ago. Seems like no-one on any forum has actually tried them. The only info I could find is the HC reviews, which stated that they sounded OK, but were not very well made. But at £150 (ish), even if you only end up with a couple of V30's at the end of it, it would not be a terrible shame.
It would be very interesting to hear what they were actually like.
Alan