Hi Keith,
I hope this is a possible solution to your problem. I now rarely use maps in their natural state for the same reasons you highlight, and I hear what you say about map pouches, but maybe with a slight modification they could become very useful.
Buy yourself a good quality A4 map case – I suggest an ORTLIEB, have a look at:
http://www.ortlieb.co.uk/map-document/document-bag.htmlThey are totally waterproof and will last for years. Then cut a piece of reasonably thick card and score it across the centre so as it will bend back on itself.
I’ve been using OS ‘Get a Map’ for a number of years now but Mapyx Quo is just fine.
Then place your printed maps either side of the A4 card within the map case, if on a longer walk you need more sheets they can go under the first set.
Now all you need to stop this flying around in a blizzard is believe it or not – a self-adhesive cup hook!
Make sure the map case has no grease and is completely dry, then stick the hook in the place as per the photo. Leave it overnight with a bit of weight on it and your good to go.
When you want to stow it, fold in half and the cup hook will fit nicely under the waistband of your rucksack.
I have used this system for eight years now through any amount of wind and rain and I’m still on the first map case!
Regards, pathcruncher