That's what I did in ME2 usually, activate squad cryo then use inferno for myself.
Can you still do this in ME3? If not I may need to load up ME2 and respec, since I have both maxed but find cryo kinda useless on its own.
Sorry if this has already been asked, I didn't see any topics related to it.
EDIT: To clarify, I know they don't stack on Shepard. I just mean can you have your squad ammo active and then switch to a different ammo power withour your squad losing the previous one?