Both actually.

But kind of by accident.

I have a Road morph, that I stopped using on my road bike. My nicely sculpted CF frame didn't have a nice straight section anywhere to fit the road morph.

I went on a trip and forgot a pump, so I bought a CO2 inflator when i rented a bike just in case.

I later added a topeak micro rocket, because I don't trust the fleeting nature of CO2. I still keep the CO2 since I already own it. Plus the micro rocket + CO2 is still lighter and smaller than the road morph.

-D