We use hank on jibs on our C22. I don't singlehand, but the Admiral takes care of the sail changes by herself. Sails are roughly rolled up and stuffed below until we get home, then they are folded, bagged, and put back on board. No ill effects on the sails can be seen.
The biggest benefit to us is that we can always fly the right sail for the conditions we are in, from a 35 sq ft storm sail to a 177 sq ft, 180% drifter sail. Wind goes from 3 kts to 30, or vice versa? No problem, just change headsails and carry on. We carry five headsails in all. An adjustable backstay insures that the forestay tension is always correct.
I have tried rigging a downhaul, but it was always seemed to create more complication than convenience. Your mileage may vary.
It is worth noting that our C22 (and presumably your Capri 22) will heave to quite well under just the main in winds of ~15kts or above, which creates a safe, relaxing environment to do the swap. Also, on a broad reach or a run, you can ease the main out far enough to block the wind from the foredeck altogether, which allows for an easy headsail change while still under sail (requires an autopilot if singlehanding).
Having said all that, it IS a personal choice, with no wrong answer. If convenience is a high priority, and you don't mind just motoring in very light/very heavy air, then a furler is for you. We prefer to keep sailing ... as fast, safely and comfortably as possible.