Big nay for him.
He has light-coloured skin and dark hair so the stubbles really show. I think this kind of facial hair he can easily grow on a day if he doesn't shave in the morning. So I'm okay with an eventual five o'clock shadow as a narrative tool to express he's having a day off or he's obsessed about something or both, like it's the case in those pages.
But for the rest, I prefer a more military, clean-shaved look for Scott. I think it fits his personality better.
Same for the hair. Though he has a magnificent mane of warm, chocolate brown hair, I like his hair short on the back. I think there should be some volume on top just because it's full, thick hair, after all. But it should be cut close to the head on the back. Not on one of those fades, though. Something like this (without the facial hair)
Not that he wouldn't look sexy with a designer stubble or longer hair. I mean, look at AoA Scott! He looks awesome. But I think that's just not 616 Scott.
Same thing for Jean: short hair looks fantastic on her (check AoA Jean), but 616 Jean is about looking super feminine, so the more barbie-like style they draw her hair, the better, in my opinion.
Holding hands even on alternate realities where they were not supposed to be together... Yet, they are written as if they're supposed to be together? I rest my case.