i love my treemotion, i beat the day lights out of it and so far so good, i have heard concern about a sharp d ring wearing out the leg straps at an alarming rate but i have yet to see this on my saddle. the colder months are upon us here in new jersey and honestly, my saddle is handling the extra clothing too well, i recently purchased the suspenders, they should be in today, i hope it helps, i think the saddle sits so low that its hard for my sweatshirt to stay underneith, so i end up having my back exposed to the elements
as far as the treeflex goes, i havent sat in one or used one before, but they do look great and they based themselves off of an excellent concept, less restriction for better breathing, i am actually thinking about buying one after christmas, i like the srt set up built right in, i had to pay 120 bucks for suspenders for my treemotion just to have the ability to use a chest ascender, and even now i dont know how it sets up, if my package comes today ill take some pics of the elusive treemotion suspenders for ya