Foot pump or track pump on tour? I'd like to see where you put it!
I did have a Zefal HPX, which was touted at the time as the pump to tour with. It fits in the back triangle of your frame, tensioned up. I never got to use it though because it jumped out of its housing and into my spokes thanks to a huge pothole on a hill climbing out of Biarritz. The wheel was ok, thankfully, but the end of the pump was shredded by the spokes. It had no guage on it though.
I bought a small replacement, with pressure guage, which I've used a lot at the side of the road. The pressure guage is useful, if only to show you how difficult it is to get a tyre up to 80psi with such a small pump, at the side of the road, in the rain etc. I'd go into the next LBS and get them to top it up on their track pump/machine.
In Italy, incidentally, they often have a motorised pump units outside the shop that you can just use. Other places too, probably.