Hey, i flew to Dublin a couple of weeks ago and the cabin was rammed with bags, a lot more than 90. I did 2 journeys under the new system and neither time did they hint at putting stuff in the hold.
Its hardly representative but it is real world experience 🙂 I have flown to dubling a fair bit on Cryingair and to be fair i think the irish and scottish folk aren’t hugely stict about things like baggage size unless a flight is really busy or you are taking the piss with a huge bag thats clearly oversize. Spain, however, seem to delight in screwing you if the bag is 1mm oversize..
I expect its a pita all round if bags have to go in the hold, so they dont bother unless the flight is totally rammed. I’d suggest just getting in the queue reasonably early, belt to the back of the plane and up the stairs, then jam the bag in the hold towards the middle of the plane. You’ll find all the people going up the front stairs are all squabbling about getting that arbitrary seat 12A that they must have.
EDIT – actually, i think they have allocated seating now, so check your boarding pass and get on the plane early!