The FroyoStone Series is running on my HD2 right now, so far i must say it is a success. The development of the lunix kernel for HD2 has matured very nicely after some initial hurdles.
If you want a phone and want a choice of what to run on that phone then in my opinion this is the way to go. Windows Mobile today, Android tomorrow, Ubuntoo on the Weekend.
Now that’s what i call versatile!