I know a lot of people in IBOB (and am friends with a few), group with them regularly and most of them don't care and are very friendly.
As with every group, there are idiots and annoying people but. in average, I would say that they are a nice bunch.
As for the Test server, in general, has no economy whatsoever and people give away things, as you can copy them for free. People either give away gear (or sell it in /baz for 1pp), help others level, give away TAs... way better than any other server. Again, as any other server, there are Karens and other annoying people but most people are nice.
Grouping is where the server fails a bit - most grouping happens in-guild so you may struggle to find a group, depending on how social you are and your play times.
A little while ago, someone was kicked out of IBOB for training someone using MQ - I remember him badmouthing the guild, so I guess that kind of answers your question, in a way.