There are these trick leads lately and i'm wondering about 1 thing.
When they trick and get a bad item they will most likely want to trick back.
Lets say they had choice scarf they trick and get black sludge.
Next turn trick again to get their scarf back.
When that happened, will they be stuck into trick because of the scarf or will the scarfs effect take place AFTER the turn they got it back ?
You won't be locked, because the Choice items only lock you into a move if the Pokemon is holding a Choice Item when using a move.
If you Trick a Choice Item to another Choice Item Pokemon you also can choose a new move in Gen 5 so you can no longer be locked into trick.