Mum ended up doing something very similar to that pattern, though with ear elastic. The faffing is just a nuisance.

I'm really curious to see what the university-supplied ones will be like!

Oxford blue? Though I feel that really they ought to supply them in packs of one, and you can get a second one if you feel it fits at all. Otherwise I suspect a lot will end up being passed on. Still, it is probably cheaper to supply everyone than it is to spend time answering emails complaining about having to buy masks...