I don't quite know if this goes here, but it might so I'll ask it anyway:
How viable would skill swap be in the current ou meta? I ask this because I have just realized a lot of pokemon are very relient on thier abilities in order to be effecttive, for instance: Aegislash, Thunderus-I, Azumaril and Mega Mawile, Scolipede, mega pinsir, mega venusaur, Greninja for sure, and a bunch of others unlisted in the top of the XY viability forum.
Say your mon had a useless ability, and with some prediction you go on a mega mawile while it swords dances, and now you have huge power and the mega is wounded. It could work but I am not sure. Which leads me to my second question: does skill swap still work even after either party switches out?