I'm probably going to get roasted, but utilitarian tomahawks aren't very good breaching tools. I've monkeyed around trying to chop through old doors on demo structures, and anything light takes forever. Car windows are a different story.
Why not get something light for combat/utility, and a one-handed sledge or 18-24in crowbar?
Who wants to carry around a crowbar and sledgehammer? I'm sticking with my Shrike.