Just some facts...
An MPL typerating is an MPL type rating, only valid with the host airline, nowhere else. You have to do a new rating for an CPL/ATPL if this comes up.
It may be a quick way to get right seat time, but no future. You are stuck in the right seat.
ICAO presentet MPL as an option for the BIG airlines to train their own pilots some years ago. Sadly some FTO se a goldmine in this and get you boys and girls to sign up for something thats realy does not have a futurer todays world.
THINK before you go this route......
My two cents...