After reading several repair procedures on an S60, I believe you drill out pop rivets in the fender liner, tie the liner back, remove the serpentine belt, hold the clutch with a special tool I don't have, remove 4 bolts that you can't see to release the compressor from the engine, cock the compressor with your third hand so the clutch disk can be removed, hope you don't lose count of the shim washers that fall out, then reassemble. Is that about right?
I'm also looking at the bread clip/wire tie fix.
The S80 does have a longer front structure with some space to work like you describe.






