Your suggestion seems like a no brainer to me. Given all the work that ROL have done removing hardware dependencies etc this should be much easier now that it was for RISCStation with the Evolution (based on the CATS StrongARM eval board I think).
The other possibility is that a someone does that using the source code from ROOL. All the code isn't available yet but it is only a matter of time. If ROL aren't quick someone else might steal the market from them!
I really do wonder sometimes what ROL's strategy is.