I'm not sure from reading but can these just be buttons/toggle switch's on the dash or transmission tunnel or do they have to be in the 'normal' place behind the steering wheel?

The westfield still use the toggle switch and buttons (self cancelling).

As long as it has the correct radius to pass the iva then i should not matter, as long as they work!!!

yep, they can be anything and anywhere, as long as the projection rules are met. all my switches are toggle switches, to the right on the steering wheel in the exempt area. the only things on the left of the wheel are starter button and warning lights