i do have that specific model on my parts shelf, but i've never tried it. after the
point source dropped into the dash with almost zero effort, i lost any motivation to try any speaker like that required more effort to build a bracket.
i have tried the
air motion tweeter(don't recall if i used the 4 or 8ohm, want to say it was the 8 ohm version though), and wasn't very impressed-- it existed and functioned, but the high end was best described as 'lifeless'. it got me reaching for the eq to fix the feeling of loss, and any time i reach for the eq, i start considering if there's a better option.
so after that, i really didn't have a huge desire to try any planar designs-- the response curve above 10k is has a similar rolloff.
i did briefly consider the planar tweeter for my truck build (pictures are in the 1x5 review i posted on parts express, because no one else is reviewing them), but planar designs are heavily influenced by the rear air chamber which was non-existent mounting in the a-pillar like i did, and they just plain looked ugly to me--the very first goal of the truck build was to have an exposed speaker there that didn't look like an exposed speaker.
it's extremely petty, and has no real basis on specifications, but most of any speakers i use/like for any project has a lot to do with it's looks and uniqueness. that's how so many speakers ended up on my parts shelf, they look different, or do the same thing a different way, and i'm curious.