Yeah, Rhodes players are rare around these parts!
How you go from lowpass to bandpass to highpass is all a matter of phase cancellation. Some multimode filters do it by where they put the input (ie Synthacon) others do it by where they take the output from (ie Oberheim SEM).
I'd certainly think the Escobedo LPF could be modified easily to do bandpass. Take a look at it's two seperate feedback loops - pin 4 > pin 8, pin 13 > pin 9, I'd hazard a guess that if you just had a single loop, pin 4 > pin 9 you could take a bandpass tap from pin 8.
BTW, the Funky MF filter does work well, the filter part anyway, any build issues seem to lie with the envelope section and the use of LM324. Like I said, the design is due an overhaul, I'm haunted by this thread - it reappears every so often I think to myself there's gotta be a redesign soon.