isle of man

Aight, please excuse any rookie mistakes in the scenario I'm laying out below - this is well outside my historical "comfort zone" (West and NW Africa) and I'm mostly working off one source: After King Magnus Barelegs died in Ireland in 1103 CE, there was a protracted battle for inheritance...

As it says on the tin. Make it so that the Isle of Man is just as much a part of Scotland as the Hebrides are. and have it remain as such even after the acts of union. Does this somehow mean a more likely survival of Manx?