First off, I'm not a GM, so anything I say with regards to how I would run things in my game are purely theoretical.
Not to sound too flippant, but you can't hit someone with the flat of the axe blade or with the handle? I'd think that the intent of the talent would be training to use a weapon in a way the weapon's creator didn't originally intend, which would be using the blunt parts of a weapon to deal stun damage.
Secondly, I take my cue from many good GMs I've had in the past, and if you can give me a good logical explanation for something that would otherwise disagree with RAW or RAI, or my personal interpretation of the rules, then I'm likely to change my mind and follow your interpretation instead.
In this particular case, I could see using the other end of the vibro-axe to do Stun Damage, if you had the Stunning Blow talent. I had not previously considered this option, hence the answer I gave.
However, you would be much harder pressed to convince me to let you use the flat of the blade with this talent -- I've fought Heavy Weapons in the SCA, so I have a good idea of what it's like to be hit with a weapon, and what various parts of various weapons would be like.
I like to think of myself as a reasonable kind of guy, but I'm only willing to go so far -- if you want me to meet you in the middle, you either have to also give up some ground, or be really convincing.
Edited by bradknowles, 14 July 2014 - 08:41 PM.