I would suggest using HP/Palm Luna if you want a webkit-based mobile OS. It's apparently using Qt and should be possible to run it on top of android the same as

I would suggest using HP/Palm Luna if you want a webkit-based mobile OS. It's apparently using Qt and should be possible to run it on top of android the same as B2G. If Mozilla's work to standardize the APIs goes well the same apps should be usable on both platforms.