I did recommend those to the guy looking to spend $400K on both his HT and Hi-Fi setup (to include construction costs).
As far as I know, Mr. Widget works for a company that help set clients up with Bluehorns.
The question of course is how close the Bluehorn compares to the Acheron Designer? The difference is a better compression driver and them flying out to do the EQ for you (which is essential too). With the simulations, the Acheron Designer is only a little bit better than the Amie's (admittedly in the midrange) and the issues at the upper frequencies are likely resolved in the Bluehorn's upgraded compression driver compared to the Designer.
That said, Bluehorn at $80K plus costs of Meyer install/tuning? Versus Meyer Amie at <$8K with Dirac, Trinnov, or a PC-based Acourate system if you don't need the SPLs of the Bluehorn? I think it should be surprisingly close.
It's also worth noting that the Bluehorn doesn't show a perfectly flat 20-20 kHz curve... but their focus was "nearly" flat 20-20 kHz response but with really good phase control. They also build everything in-house and still service discontinued products like the HD-1, which solves the repairability issue for you...
Meyer does have a MM4-XPD for directionality. So they do have deployed some of that know-how already but they don't apply it anywhere else in their product line.
I will say, that if you haven't gotten your end game speaker yet (I stopped following that old thread), you should do the Notify when it Stock at a place like Sweetwater. When it's in stock, it should qualify for the 30-day return policy. By the measurements, the Amie and Acheron Designer are nearly the same at lower SPLs which makes the Amie + Amie Sub a formidable option.
It's industrial looking though. That's the main weakness in my opinion.