On Henry, he was a winger/half forward as a kid going through all of his colts and underage programs. He was never a small forward. Freo played him out of position as a small forward and he wasn't able to impact.
His skill set isn't based on speed, forward craft and finishing in front of goals. It's hard work running and being a link in the chain, disposing of the ball well and seeing options ahead of the ball that others can't while also having the skills to take those options. He's a taller player who should also fill out well enough to burst from stoppages with the ball in the future.
He's never shown any attributes that would lock him into a small forward position. He's a winger.