Why? An emulator inside an interface interpreter(wine) to use an OS that is preferable to Windows because of all Windows shortcomings. And yet the top layer (Linux) has all you want without the shortcomings of Windows and it's all free with tons more software than RiscOS has ever had.
If this is simply to show it works then fine as an academic excercise. But it is impractical and unnecessary for day to day use. So far there is nothing on RiscOS that I have needed to transfer to Linux (PCLOS). I did copy over a few sprites to emulate a RiscOS desktop on PCLOS just to see if I could. Otherwise nothing. Quite a sad surprise really, which is why it has remained switched off since November.