ImE, obviously not? I don't have data, but general social interactions strongly suggest that smart people are nicer.
My model of how this works also suggests they would be nicer. Like, most people are nice to at least some people, so being not-nice is either due to a belief that being not-nice makes sense, or because of lack of self-control. Both of those are probably less common among smarter people. I don't think the correlation is super strong, but it's there.
Also, I don't think you defined the orthogonality thesis correctly. Afaik, Bostrom said that any combination of intelligence and goals is possible; this is not the same as saying that they're not correlated.