There are plenty of them among members here; but many members bought their speakers before Philharmonic Audio was a thing.
Also, there has been an unfortunate "hole" in the Philharmonic Audio offering. Until the mini-monitors (and you can still argue they are a niche offering), you could buy the AA's for $215/pr or the Philharmonitors for $1100/pr. That eliminates what may be the most common budget range. I believe he may be exploring a design/modification to fill that void!