really? of the group Gale is the one I trust least... he will totally sell your soul out from under you
How much I trust the companions is another matter (and one already much discussed in
another relatively recent thread). I think most of us have played enough cRPGs to learn to distrust appearances. But here I was talking about appearances and manner, and yes I think if you're a friendly, non-asshole to Gale, he appears to be a friendly, non-asshole back, as (in my view) do Shadowheart and Wyll ... at least to begin with, though of course we uncover things in the game that may concern us. And I should say that, despite the fact that in different ways I think both Lae'zel and Astarion, the other two early access companions, do act like assholes when you meet them I still think they're fun companions and I like them anyway (especially Astarion).
If we're comparing with D:OS2 rather than BG1&2 then I should be able to contribute more, but I only played the first act of D:OS2 about three years ago. I don't recall if or how much the characters or interactions were behind the game not grabbing me, but at least I can definitively say as it's my personal experience that it's perfectly possible to be meh about the first bit of D:OS2 and yet love BG1, BG2 ... and BG3!