Thanks!
Usually when I fly budget I don't purchase a carry on and have a good track record of not being asked to pay, but here I purchased a carry on because I figured better safe than sorry. Oh well... I'll report back if they did end up being picky about it or not now that they're hopefully more settled into a routine.
If you paid for a carryon you certainly won’t have any other problems.
If anyone here is flying Norse and connecting on a separate ticket to an onward destination, leave extra time and have a backup plan for cancellations/delays. Better yet book all travel on a card with good travel insurance coverage or buy a travel insurance policy that covers this stuff.