We have one on a Facnor continuous line furler
. It is definitely not a reacher/drifter sail. Think of it more like a fuller Code 0. It has a vectran torsion luff line that allows the luff to be set bar tight and straight for upwind work.
It works extremely well from 60-120* AWA in winds <17kts. With some tweeking (if your sheet leads aren't perfect for it), it works fine up to 40* AWA, and the luff can be loosened to allow it to work at lower angles - even DDW, although the top of the leach spills off a lot. On our catamaran
, it is mounted on a movable bridle
that allows us to pull the tack completely over to the windward bow - and it sets deep downwind well this way with the main still up.
It has no UV luff protection, so shouldn't be left in place. Also, ours will start to unfurl at the top quite easily - even in lower winds. We never leave it up when not in use.
If one is looking for a deep reaching or downwind sail, this wouldn't be my choice. If, like us, you have a relatively small, non-overlapping headsail that isn't very powerful in light winds, this is a tremendous boost for reaching in lighter winds.
We got ours just before leaving for the Caribbean
, and haven't used it much since because we always have enough winds for the white sails.