For shiny hunting reasons (using SOS because I dont want to masuda): Can you use skill swap on an alakazam with synchronise to move synchronise to the wild Pokemon, then send in a smeargle and use skill swap again to put synchronise on the smeargle? Will synchronise still work on SOS Pokemon? Thanks for your help!
Yes it would work but only with the pokémon that is called after that process. For example if you are shiny hunting a bagon you can skill swap with alakazam then send out smeargle and re-use skill swap and after that the next bagon it will be summoned will have a 50% chance to get the nature of smeargle.