1. Why not flip the leather assembly under deployment and pull down with one hand?
2. Works with any reasonably sized necker. I can one hand sheath a 3.5" Pro Soldier. You can too.
3. But what if the knife is closer to the sheath? For the sake of parity, let us assume that the knife is equidistant to the pocket and the sheath. In the third scenario above, I offered a best case pocket dump. Worst case would be a two-handed reclip. Middle ground, a one-handed reclip. Frame/liner locks exceptionally fast? Fast, yes. Faster than a free dropping Axis or compression with a wrist flick? Probably not.