I think it's obvious that Luke has put in some good work over the off season. It'll be interesting to see how he matches up against more "talented bigs" vs. SDSU, U of U, et al. Luke has a big body for 6'10" which is helpful for the role BYU needs him in.
I'm impressed that he seems to be running the floor better this year Last year he would pick up a number of "dumb fouls"--if he can continue to refrain from that aspect yet maintain his aggressive defense. He'll be more than serviceable. Closer to Chris Miles than Eric Mika, but I'll take that.