While such a processor has some obvious advantages, it denies you a usefull control in BW processing: agitation.
Remember, the OP isn't interested in C41, or E6.
Hmm Agitation is just one variable. The others are: Dev type, Dev concentration, Time, Temp and film + exposure. I'd say its only a big deal if you are using the zone system or really into stand development. There is an article somewhere in cyberspace on agitation schemes and sharpness. IIRC there is not that much difference from hand agitation to constant agitation that you will notice. And using a jobo does not prevent you from using other methods when you feel the need.
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