I use a Cannondale carbon pump - not sure it's a mini, but it's really thin and small.

I wouldn't ditch my floor pump for it, but for sure, it's no pushover for on-the-road flats. I get to 100psi no problem, and fairly quickly, and with no hassle, on 700 x 23c tubes. I do a lot of long rides (4+ hrs) so I wanted the insurance of having more than single-use CO2 cartridges. It's been great - no complaints whatsoever from me, and mounts on top of the same screws that hold in your water bottle so it's tucked in next to it. I never even notice it until I need it. Nice.