Of course you can take my word for anything I say I hear. Also, because I am not in the business I tell things like it is without concern for politics.I didn't doubt you :)
This thread should have been finished after the 5th post. I think your response nailed it perfectly. Class-D and speakers < 2ohms just don't work, with maybe the exception of some of the latest offeringsWith class D amps the older amps were limited by their output filters- not their current. With newer amps that can switch faster, the output filter can be set to a higher frequency and so 2 ohms isn't the concern it used to be.
2 ohms requires more current of course. Most output sections can handle the current; we're using devices rated at 30 amps each which is double the current capacity required for our prototype to make full power into 2 ohms. The problem isn't the class D so much as it is whether the heatsinks provide adequate cooling (important even for GaNFET-based output sections into that sort of impedance) and whether the power supplies have adequate current to support the power.
So like any other amp: some do some don't. Simply inquire with the manufacturer. Yes- just that simple... 5 pages later.