Thanks for all the responses - I thought it was a long shot that I'd get any feedback in time, but it was a real help in the end
I went to Athleticum, and they had a ski bag at 20 CHF (but the straps didn't look very sturdy) and only one expensive and small boots bag.
In the end I went to the Migros SportXX at M-Parc and got both for 50 CHF. Aldi might've been a bit cheaper had I had time to get there, but I'm happy with these.
Thanks again!
PS the Wedze bag is going on my birthday presents request list!