I have both a 155sqm ASI in a sock, and a tight luff screecher of 90sqm on a long endless line furler
fed to the helm
I sail frequently solo (or effectively solo) including 30hr coastal stints.
There is no doubt that the screecher gets much more air-time due to ease of use especially when solo. The ASI allows for perhaps 10-15 deeper down wind sailing but an reciprical reduction when on a tight reach compared to the screecher.
Both require tacking downwind as you would expect both to fly them adequately, but more so to get better VMG.
You mention strong wind....
Both are fine up to 25kts on a deep reach, but at this wind speed, I will be averaging 9-10 kts and will start to surf occasionally so will be looking to reef the main. If I had the ASI up, I'd be bringing it down and either fly the screecher if confident the wind was not strengthening or I'd be unfurling the genoa
sheeting it outboard
and more aft especially if in the 25-30kt range. Above 30kts, it would be two reefs
for certain aiming to keep the speed under control. Obviously neither the ASI or screech has a role in my boat
with winds over 25-30 unless I've been too foolish to anticipate the wind strengthening.
So, I would strongly support having a screecher as the better "go to" sail especially when short handed. It is also very easy use the genoa to assist with setting or furling
the screecher with both sails
being on furlers and the genoa easily able to set inside.