I have a mini pump that does both. I can get to 80psi reasonably on the pump side but the CO2 side is very nice for quick fixes. It came with a mount that goes behind my seat tube bottle cage that holds the pump and two cartridges. I will additionally carry another cartridge or two in the saddle bag as well. It's not about weight for me so much as the 5 seconds it takes to fill the tire that way.