Please keep in mind that even when different amp manufacturers use the same output section, the way that the amp functions on the whole varies a great deal. This is not just a tonal difference, but actual performance differences which we observe in our bench tests at Bass Gear Magazine.
That being said, yes, Bob Gallien has done probably a better job than anyone else we've tested so far (possible exception of Orange) at delivering solid output which exceeds the (unmodified) rated capacities of the ICEpower module(s) he is using.
With regard to the Minnie 800D, you have Jim Demeter involved, and he's not one to leave well enough alone, either. He is using an actual transformer at the front end of the output section. Yes, it's probably 20x more expensive than just using a simple chip to do the same thing (which most all other companies do, and with pretty good results), but Jim Demeter always designs with a great eye for signal integrity, and if he knows of way to make something which he thinks is better, then he's probably going to take that route.
I have not played through any of Jim's new class-D amps, but I have a ton of his prior gear, and I would fully expect him to do it right.
Plus, I know how passionate Jule is about tone, and I can't see him wanting to compromise at all, either.