I did some examination of storm setups when I was teaching a few years ago (you sound like a Saffer- if you are, you probably know the doyen of SA sailing who I worked for, and how cautious he encourages one to become) and what I found very popular with the furling
folk was a "hank-over" stormjib with a wire luff.
The stormjib binds on with webbing ties something like a cross between an Equiplite shackle and a coat-toggle. That way the sail could be fitted over
the rolled stays'l without removing it from the furler
. My personal fear is working the pointy-end in heavy weather
and having to wrestle heavy headsails off the deck
to get them down below, so leaving the gear
in place and adding accessories makes more sense to me!
I've only used a stormjib twice in anger, and at 55kn (app.), the thing's just about blow-all use if you want to go anything like upwind. I think it's only of use running off.
The sheeting angle is so inefficient and the sheet-leads are so approximate (not to mention the loads) that the sail really comes into its own as a forgiving little rag to drag the pointy end round in front of the blunt end! That way you have a fairly comfortable riding sail to tow you out of trouble/get you home/fore-reach with.