It's a nice presentation, and I knew he was going to say he had been switching mics every few seconds (although I couldn't tell) it was a guess.
But, there's a big difference between speech and a male singer letting loose in his upper register.
I've got a Wunder CM7 and I'd certainly like to compare them.
The Wunder is no exact U47
clone, but it does saturate nicely and control sibilance well under high SPL's from my vocals.
Hopefully they'll be a UK demo available.