As a Michigan fan, I liked Sims. He's very athletic, and looks like he's improved his shooting. At Michigan, he was asked to play a very weird role for his abilities (the Kevin Pittsnogle role for those of you who remember 2005 West Virginia.) He did his best at it without much complaint (unlike Manny Harris,) although unfortunately for everyone involved was very miscast in that role.
Still, even with improved shooting, he seems to me to be like Jeff Green, but not as good. That's an okay player to have on the bench at the league minimum, but we're talking our third-string 3/small 4, and not someone to fall in love with.