EAR Yoshino speakers

Hi,
 
I have seen some pics and a marketing description of an EAR Yoshino speaker, named Primary Drive Small (or Large). The concept seemed pretty interesting. I haven't seen any reviews or even user feedback on these either, yet they seem to be presented already a couple of years ago.
Has anyone on this forum, or within TAS had any experience with these speakers.
 
Thanks for any comments or feedback