The Treeflex harness was unlike any other before it. Specifically setup with a "hard" central webbing attachment point for clipping in a chest ascender such as the Petzl Croll, for SRT ascent climbing and a separate webbing bridge for work positioning.
The Kolibri-Click (though a nice looking harness) does not have this "hard" attachment point. The only other harness that I can find that is similar to the TF, is one of the Arbpro harness'. IMO, they took "their" design from Paolo's TF. Yes, I own one (having bought it only after I could not find a TF for sale) and it cannot compare to the TF.
I did talk with Paolo last night and though I don't want to go too far into the discussion that we had about the Treeflex (not my place), I can say that the harness has been pulled from the STL line, due to some contract issues. ABSOLUTELY, nothing wrong with the Treeflex Harness. Like I said, IMO, still the best SRT harness ever designed and made.
Huskyman, thanks again for forwarding Paolo's email address to me. We've been trying to contact each-other for awhile now. He used to post on the Buzz, and I will forward him this link to see if he has anything else that he might like to add to it.