So glamour plates are dumber than anticipated...

[Squintina]

Oh ok, so you can combine both systems. Good to know. Thanks a lot!

Yes, because the application of glamour itself isn't a separate system.

The dresser is a new system to store.
The plate itself is a new system to organize multiple glamours.

Using the plate to apply glamour however is not a new system. It's just the existing system being applied in bulk without having to keep using prisms. So if you have 3 glamours on a plate, it's no different than if you were in the old system manually applying those 3 glamours yourself.

Glamour in itself hasn't changed (hence why the job/class restrictions still apply, and why it overrides existing glamour that's in the same slot, no different than if you were to re-glamour an already-glamoured item the old way). It's really just a different way of clicking "Cast Glamour".

And because it's the same glamour system, that's why glamour dispellers are used to remove glamour regardless of how it was applied.