Goat packer,
I do have self arrest handles for my old Leki Extreme avo poles. I have never had to use them, and I would only have one - on my best hand - the right side. I am used to holding my iceaxe in my right hand and grabbing the shaft with my left, so I do not want to complicate this automatic move.

Obvioulsy you are ski mounatineering, so carrying a real iceaxe may be really hard unless you tape the axe to your pole.

When ski mountaineering, if you get into a spot where your skis are inadequate, you better have crampons and an iceaxe to take over. Barring this - most ski mounatineers learn to do a self arrest with any ski pole - it works - and ignore the axe. That said - often the usage is not a complete arrest, but to supply drag to sweep your boots and skis under you, so you can then start skiing again. Sliding on steel ski edges is WAY safer than self arrest.

On rotten snow dig in the pick end not the axe end of your iceaxe.

Jim crazy
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These are my own opinions based on wisdom earned through many wrong decisions. Your mileage may vary.