I've been using them for repairs, they are brilliant. I would normally use a silk wrap but the Minx coat last much longer and are so much quicker to apply.
Several ladies have vertical splits and the minx in conjunction with the IBX is fab, most of them have vast improvements and some have even had the splits disappear completely.
Also I've had a friend who shut her fingers in a door which resulted in a blood blister under the nail. Its now grown half way up and the nail has started to disintegrate. I put a Minx coat on top 3 weeks ago to stop her picking, its stayed put and hasn't lifted to any degree. She's been careful but not that careful and is absolutely delighted.
I don't bother using them under shellac as it removes so quickly anyway and I don't think there's much benefit plus clients just won't pay the extra. I don't do L&P so can't comment on how well they work for that removal.
I love them and would definitely buy them in the future.
Karaxxx