I’ve finally found some time to write an HowTo install SDEMultiRoot on your Archos gen6 device.
For now this will be for more advanced users I guess.
We’ll happily accept scripts that automate this though! Also feel free to update the guide if something isn’t clear enough or missing. 
If you have further questions or ran into problems contact us on IRC
Yesterday I took the time to try out the improved boot menu by Kevin – our currently most active member. It’s really cool. You can even put AVOS (The original Archos® UI) in there!
The menu sports a nice C64-like low-res bitmap font look. I’ll try to post a photo later.
But the most impressive part: It comes with touchscreen support! Take that C64! 
You just tap an boot menu entry twice and off you go!
openAOS boot menu
I’ll try to post an small HowTo ASAP so it will be easier to join in on the fun.