Hawks are great tools, I use the Cold Steel Trail hawk myself.
Note that hawks are light; the best chopping power comes from using a longer handle, which can be fashioned on-site given that hawk handles are tapered rather than wedged. The biggest mistake I made with my hawk was shortening the handle, give the longer one a go first and if you want to shorten it, do so in increments.
The Cold Steel hawks also have a grub screw that can be tightened onto the new handle for a little bit more security. In this sense, a light hawk with a hammer poll is the best pack-axe in my very humble opinion; they tend to have thin grinds, good for limbing and felling small trees, and the hammer poll will allow you to bash wedges in to split larger bits of wood, it handles smaller bits fairly well by itself. If the bit gets stuck while splitting, which can happen since there's a sharp transition to the eye, shift the head so the eye is in the middle of the handle, and give it a twist from both ends of the handle. The hammer poll also means the head can be used as a wedge itself to be smacked in with a bit of wood; not the most effective given the grind type, but if there's plenty of wood lying around ready to be split, it might just prove easier than fashioning a handle and then splitting.
If your primary concern is volume, an axe wins every time for me; a hawk isn't big or heavy enough to fell and split enough wood for a winter. But for a camp/trail tool, its versatility, packability and light weight make it a winner for me.
Pete