I play exclusively on Torchbearer and as much as I can remember, everyone has been great. I haven't seen anything nasty or negative. Yes, maybe I have been in the right channels to not see this, but I even with the main globals, no problems.
I did a TF once (I can't remember which one.. someone will know it when I describe the situation) where I was given the star because I was the only level 50 in the group. I didn't mind, but I really had NO idea what to do. This TF involved about 15 hunt missions in different hero zones, one right after the other. (The TF started in FF). One of the of the TF members, who I had never played with before, stepped up and started explaining what needed to be done and assigned every player a zone to go to and where to go next. It was amazing and made something really tedious much easier. I thanked him for doing that and he actually apologized for "taking the team leader role" from me. I told him I was grateful that he did it. I have done other TFs with him because I know he knows his stuff and how to run a TF.
Everyone I've teamed with, from pugs to channel members to SG members, have been helpful and polite. I've only had one bad pug and that was because the leader wanted to play at +4 and I wasn't equipped to handle it. I left after our second mission, thanked him for the invite, but told him the group was out my league at the moment.