MSR fuel may be blended/proportioned for better cold weather performance, but for all practical purposes the fuel contents are similar enough that the stove shouldn't give a fig. These look just exactly like the world-standard butane canisters that have been around for a long time. If the connection works right without leaking (and I strongly suspect it will), it should work fine. Will cost you one can of MSR fuel to be certain... BTW - IMHO, the iso-butane based fuels (like MSR) DO work better in cold weather.

HTH,

Tom