i have 1, using it vertical for a few months now, on top of 7 meters. i`m really happy with the working of it. last 2 days worked lots of europe stations with it and got most 5-9 back.
working with a Kenwood ts-570DG. without the tuner its receiving also some 20 and 40 meters, and it tunes a bit on 80 even.
its not as good as my 1:49 with wire on the amateur bands, but for 10/11 its a more than average piece of aluminium.