I used one for a couple of months.
It was workable - but only just, for G10.
the 2 'awkward' TPs - 11720 V & 11800 V
would fade to pixellation threshold (around 30% Q) at times.
Worked fine for T5 (G25).
I since replaced it with a primestar 40x30 and those G10 TPs are 50%+
What's interesting is that the linear (Eagle aspen) LNB on the DTV has a flange mount feedhorn - which can be mated nicely with the primestar feedhorn - so you can use 13V/18V polarity switching.