He's goofy, friendly, seems really nice and down to earth. Definitely feels like the kind of guy who will be around the program for a long time.
I also want to mention Kanon though, I think he's really bought into the culture here as well. He seems to be more of the "new" BYU culture/commit, where it's more about the no distractions and honing your craft aspects of BYU (kind of similar to Retzlaff), but he's integrated really well and it seems like he's really enjoying his time here.