Makes sod all difference, like yourself I have done the scientific see what it really does and its just not worth it.
If you were at 10k plus struggling to make "feet dry" it might get you onto dry land but for your normal flight don't bother.
O and BTW this will be sooooo out the comfort zone of most FI's in the UK.
Stopping the engine then pitching up to sub 50knts to get the prop to stall. They would ****e themselves and it would be so far outside there training experence they wouldn't be comfy at all.