Steph, the colour pic in your post shows a bomber or PR aircraft, with a full "yoke" or wheel. The Tamiya kit grip is correct.
Wojtek's pics show various Marks of Mossie, including a dual-control trainer.
The number of "buttons" on the stick grip depend on the armament. There could be three buttons for MGs, canon and gun camera, two buttons for the same and canon only armament, or just one button for canons, depending on camera connection etc.