I've been a bit surprised by his speed. I was sort of expecting Frank Howard or David Ortiz on the base paths and in the field, but he looks no worse than average. FG's scouting has him at 45 now and 40 in the future, but I'd say he might be a bit better than that.
Also, last night I was surprised to see the Red Sox shifting the infield on him. my impression is he sprays the ball, but that might only be for balls in the air.