Had anybody listened to JTR speakers?

Yes.  Fun listen for sure.  

Shall I attend Axpona 2020 to listen to it?

https://www.youtube.com/watch?v=i7cAFNHs_IA

https://www.youtube.com/watch?v=wiqPy-f_XI4

I found one Youtube video.

Shall I set this up as second HTS system?

Interesting but you definitely need to hear them before buying as I didn’t see anything on their website about an in home audition. If you do get a chance to listen to a pair please post your impressions.

I have been wanting to hear them for 3 years. They look like a better version of the speakers I use every day. Not cheap, but there is a lot of material value. I don't thinkthe y  are just a rock speaker. I'll bet that they're good for everything.