Guys with skating issues are basically a wasted pick no matter what they produce at a lesser league as whatever else they have doesnt make up for it at the NHL level.
Having said that, there are always exceptions to the rule, but you pick your spots.
Habs have a history of overlooking skating issues because " it will improve", never does, and another bust. As an example, Habs drafted Mark Pederson 15th overall in the 1980s. Guy was a scoring machine as in 40 plus goals, 100 points in 60 something junior games for a few years . but lousy skater. At NHL level he was great from the blueline in, but thats it, so a bust. Ribs was a 2nd round pick, and slow, but could dipsy around . Its a real bad idea to ignore skating issues in the 1st couple of rounds, especially the 1st round.
So Roy's skating will likely be a huge problem at the NHL level, but a 5th round pick, well what the heck.
Hope he pans out.