I just tried that and it failed in a complex unit. When I move that out into a simple demo it works with INLINE but otherwise fails.
So now I have a MAP file showing me that all these methods are in the EXE even though they have been turned INLINE, while the simplistic demo works.
I have used the INC file which is used in the complex unit in the simple one and still all works.
So at best we can say this works only sometimes.. surely a reason for bloated EXEs..