My next bike solution will be the oneup pump in a 76projects inline mount
Speaking as someone who has just a few minutes ago stripped and rebuilt his oneup pump after only owning it for a couple of months, this does sound like a good idea. I don’t know whether this was a freak occurrence, a knock that took the handle away from the seal, an issue with the oneup pump or its placement in mud’s way but mine got mucky inside from a day at Bikepark Wales last week, without being used. Mildly annoying and I didn’t fancy using it graunchy like that, although the clean and rebuild is a piece of cake.
More relevant to the OP, I think it’s a reasonable pump (not as good as a trail floor pump, but fine) combined with a decent minimal tool (multitool and tubeless jabber) storage option.