I know they were essentially run as VM, obviously x86 code cant run natively on ARM architecture without first being ported, and without the source code or very significant reverse engineering thats not going to happen, I was using those as examples of just doing things because they can.

Android however has been ported, which obviously I understand is a more simple task because of the freely available source, but it still had to be ported, and to most people, probably more as a show of what can be done, I've had an android phone and would not go back from maemo, I can imagine many would not.

And with my basic understanding of winmo, it requires an "sbl" whatever one of those is, to boot or install, but considering that winmo has been installed on unintended devices, and different versions on devices etc, some form of work around must have been made, so I would imagine to an extent some steps would already have been made?

I'm the first to admit I would be unable to do it, but as far as my understanding goes it would be quite feasible, and am basically just saying it kind of surprised me.