I'm also really curious about the runtime performance of such a stack.
I like Haskell, but it's not what I reach for when I feel the compulsion to hoard memory carefully, and I'm very interested in precisely controlling memory on mobile devices.
Agreed. This isn't really a function of having too many layers involved though, Dalvik here is just bootstrapping and then gets out of the way.
Additionally, having dealt with memory issues on Android (particularly on 2.3 & below), Dalvik doesn't set the bar very high for an alternative runtime to be competitive in memory management.
I like Haskell, but it's not what I reach for when I feel the compulsion to hoard memory carefully, and I'm very interested in precisely controlling memory on mobile devices.