that machete probably works better than the axe. I have a small Gerber axe - similar to the folding but with a straight, plastic handle. The upside is it is very light... and the downside is it is very light!
It has no heft to it, and I prefer a little weight behind my hatchet. I got it for camping in my kayak where size and weight is a concern, but I rarely use it because it is so light. I carry a Sven Saw which I use far more than the axe.
Certainly in an ExPo rig I'd much rather carry a 'real' axe because I have the room and the weight isn't an issue.
but the machete... that looks sweet! I'd say the machete is more useful.
mike