Has anyone given Mozilla OS a try yet? They've recently done an update and it sounds like they're getting somewhere with it:
Firefox OS update adds performance, polish to Mozilla's webby mobes

More specifically has anyone tried the dual-boot option yet? I'm thinking of giving it a go on my SGS2 and wondered if anyone had any tips or comments on it?

Standard Install - https://developer.mozilla.org/en-US/..._mobile_device
Dual-boot Install (on SGS2) - https://developer.mozilla.org/en-US/...ndroid_on_SGS2