I am sure I'm one of the few that will think this, but I'm gonna point it out anyway. While I LOVE quick fists, do you REALLY want to trust your life (head staying attached and such) to a piece of rubber holding an ax in place inside your rig should you get in a head on at speed or roll the rig down a hill multiple times????
There's a saying we used in rafting/swift water rescue.
"RIG FOR THE FLIP" Meaning always rig your boat for the worst case scenario so you don't lose your lunch, camping gear, dinner and beer should you flip the boat. I use the same mind set in rigging my offroad rig. Ax's, shovel's and such get BOLTED in. I like my head attached.
My old setup:
Worked great and kept them safe. Easy enough to get to and you can fab something close for the stock rack. Rust was never really a problem for the five years they were up there. Yes, they did rust, but only surface rust, so not an issue.
My even OLDER setup. Sorry, as I can't find a really good pic of it, however I used to hold my shovel, ax and highlift in my ski rack. Worked out really great.
Hope that helps with idears. I'll try my best to find a better photo of the ski racks loaded.
Cheers,
Josh