Well, I've just cleaned it again!
Quick rinse, degrease the chainset with WD40, wash everything down in hot soapy water then rinse off.
Thorough clean of the drivechain with hot soapy water, hose down, then dry everything with Blue roll.
Next, I applied ACF-50 to almost everything, wiped down and left to dry.
Then, re-lubed the drivetrain, all pivot points and a solvent clean of the rims.
I can't do any more than that, my time is short enough as it is and if it turns into a major chore then I'll end up just not bothering again.
Still, it's all clean and shiny, and a big improvement over NEVER cleaning the commuter!