thats not what they are reffering to. alice should simply have been a x86 laptop with an emulation and pre installed os4 and/or genuine system. it should have possibility to use/invoke host applications (linux/windows?) from under an emulation. same as what apparently aeros is doing with aros. the drawback was though apparently that you couldnt really manage the host application windows even if they appeared over workbench, likely disguised in the same skin as you would manage emulated workbench and eventually you would end up on host desktop instead or something like that.
one way or the other, even though highly advertised and as usual announced year after year, this solution has never surfaced up till now. not that one couldnt set up thing like that himself at home.
Porting a modern browser to AROS is a problem, since AROS doesn't have memory protection[1], and it's not safe to use a system without memory protection on the Internet. I know you're recently returned, but I've been banging my spoon on my high chair about this for a while now.
If you want to use AROS on the Internet, you would be better off using the hosted version so you can use the host's web browser and be (comparatively) safe.
There is still value in a hosted version of AROS for the RPi. The AROS nightly builds work well hosted on Linux, but they are fairly primitive. The really nice versions of AROS are the distributions, but they have limited hardware support. So getting something like that over on RPi would still be a big win.
On the other hand, AROS native on RPi would be really cool, even if one couldn't do much with it. I would be happy for either, since the hardware investment is so low.
---
1. It's probably possible to add memory protection to AROS, but it wouldn't be backward compatible -- programs would have to be written to use it. I expect it would be a lot of work.