I have the same feeling about him, this player is a black box for me as a pro. I see the offensive dominance in the NCAA on a very good team at that level, but given his physical limitations, I don't see how he will be able to replicate that quickly in the NHL and also in the AHL, which is a though league to play in physically.
In the NHL, the only D with a similar frame is Jared Spurgeon, listed at 5'09, 166 lbs, and Spurgeon played junior at 20, that's why I want Hutson to play one more year at BU, just to work on getting stronger and being more ready physically. Spurgeon is not as gifted offensively as Hutson, but he is a better skater. Also, find me the last team to win a Stanley Cup with a D that is 5'10 or less. Samuel Girard was hurt early in the playoffs when Colorado won it.
All that to say that I dont see how his play at this stage of his career would translate well to the pros. A defensman need first to be able to defend well, the offense comes on top of it. We see it this year with Struble, he rose above the others because he can defend well at the pro level. He was a plug and play D last spring in Laval, and made the jump to Montréal at the first opportunity, never to be sent down again. During this time, Harris, Barron and Xhekaj, better offensively, are struggling to establish themselves in the NHL on a weak team. All that to say that I don't know what we will get in the pros with Hutson, especially if he turns pro this year. If he is to succeed, he will need time. He is not Quinn Hughes, and Adam Fox played three years in the NCAA. Hutson should do the same and the kid is open to it. It's on Hughes and Gorton to be wise with him. And the nice thing is that the Habs can afford to be patient with him.