TC - yet again you post with the sole aim of upsetting as many people as possible.
I have over 12k on Pumas 332/332L2/225 and also instruct for a living. In my opinion, from 300 feet, with slowly decaying airspeed, I feel this is more to do with inertia than IVRS However, the key issue here is it does not matter.
The prime causal factor is failure to maintain airspeed in the descent until insufficient height remained to recover. The origin of this factor is mismanagement of the AFCS on an instrument approach. The pilots who fly these types in this environment know it. We do not need your bombastic bollocks about IVRS/VRS.
DB