In the forums over the past year or so there has not been a lot of discussion about Hub's trumpets. There have been some posts regarding his flugels and these all seemed to be quite positive.
But if you were to think that there haven't been many responses because not many people have actually tried them (at least in North America) then you might be right! Perhaps you could check some of the European websites.
Brass-Forum.co.uk - The Online Home for Brass Musicians is one such devoted to all brass.