At this point I think it is fairly safe to say that HH and Tree are probably not scum. I'm also dropping Fire off my list as I don't think she would have voted to their boss on D1, especially when it was the second vote on Wiz.
What has recently caught my attention were the votes of Chup, BH, and Uhoh. I also think it is worth looking at who voted for Wiz relatively late. It seemed that some were blindly following, although I'm not sure scum would be so willing to let go of their boss. A 50/50 for the hit is pretty devastating.
I fully expect to be looked at and it wouldn't surprise me if I get BBQ'd next nightfall.