Yes I use a Diezel 2x12 FL V30 with my Herbert. I sold my crapy Orange 4x12 cab and I am so happy with the new cab. Especially palm mute sound amazing. But in the end it is a matter of taste. And it is also a matter of the usecase. My cab is used in the studio only. Not for live...
I've heard (also from Peter Stapfer) and read that the G12K100 speakers are better for lowtuned sounds. But I cannot verify this - I did not have the opportunity for direct compare.
Regards don_huberto