re. clipping tools into a belay. A toughie. On one hand, very few leashes these days are runner-strength, though I believe the Wild Things leashes still are. On the other hand, spikes are not that strong either, and not just Black Diamond's. I hitch a runner around the head of a tool to string it into the belay, so the force, if any, comes onto the strongest part of the tool.
Haven't tried the Android, but last winter I watched a guy using the C-M clip leash system drop a tool, and that was it for me. I like the newer version of the Lockdown, The Twist (though it never seems quite secure enough on really steep ice), and see promise in the BD Robo leash, which I used once this season. My wife has the CM Saf-T-Lok leash on one of her tools. Used a couple times, works OK, but have yet to try in cruddy conditions where icing would be a problem.