Hey guys, not really gonna breakdown any film because i can't do that for shit. but i made some GIFs of Gillislee blocking against LSU and Texas A&M last year and i thought i would dump them here. Take what you will from it, but for me this answers the questions i had about his blocking. He seemed to be able to ably handle men much larger than him.
He's lined up in the RB in all these plays, and he's #23 (idk how to do that box thing to point stuff out)
He just blew this guy up
Play # 2
He does a really nice job of going low and completely taking out the LB/DE
Here he just wrestles down Montgomery
This one is does a nice job of just redirecting the DE safely away from his QB.
Overall, i was very pleased with what i saw from Gillislee in terms of blocking and running. he's not afraid of contact and he can use a little power when needed. He won't outrun the field, but he is quick.