[Brightcolours]

You also can adapt Nikon F-mount,

So say I get a modern samyang lens (50mm f 1.4 AS UMC) with nikon mount, then buy an AF confirm adapter "nikon F-mount to canon EF", would that work?

Also I'll look into that XP 50mm lens. thanks!

Why not get that Samyang with EF mount and glue a EMF focus confirmation chip on it? Either way will give the same result. Whether manual focus works for you on your 7D mk II is something you can find out with your current lens(es) beforehand.