The two models of Morph pumps (road and mountain) are different diameter. You can find this same difference across styles and brands. The (fatter) mountain one can push more air in fewer strokes but the road one takes less muscle to make high pressure. The road one is consequently lighter too.

I have mt morph pumps, two of them, in my laptop backpack and my Camelbak. They have turned out to be pretty large things to carry, for as little as I use them. More than a foot long and more than half a pound. I am usually airing up with an inflator or floor pump before a ride. Flats while out riding with tubeless are very rare. Maybe I'd like them better on a tour or something, where there is no floor pump.

I think if I went back to tubes, I'd also go back to CO2, at least for local riding. If I then added a pump it would be tiiiiny because it'd be the last thing to try. I switched to pumps because CO2 is not that compatible with tubeless sealant.