I don't think dual boot works yet (could be wrong). Ideally, we'll start trying to use the kexec features in titan's (and others') enhanced maemo kernels to load up android. (the OS's don't run side-by-side using kexec, btw). I haven't tried the bootmenu method, but that would be your best bet right now. Just wait until DJ_Steve has a build functional enough for us to start playing with now.

Unless you're a dev and can help him do the build Then talk to him!