In reply to ice.solo:
Just get two technical tools. Vipers, Cobras, Flys, etc... Look for more traditionally shaped tools (as opposed to something a fusion, nomic, anarchist...). If you need to self-arrest, they will do the job just fine. If you feel like you need something longer for balance, use a trekking pole.
if you think you really want a walking axe, pick up a cheap used one. Doesn't really matter which one - they will all work.