The only bike in my collection i ride without a worry is my A2B Metro.. damn thing has been a submarine so far, 2 years of pretty much only being used when the weather sucks. On sunny days i ride the faster bikes.
That being said, my Norco Chaos i often ride in the wet, the seatpost rack has batteries and controller that will fit inside a grocery bag, i carry a few in my backpack all the time, if i get caught in rain i simply whip out a bag.. cover the batteries and controller, tie loosely at the seat post and ride home.... as soon as i get home i remove the bags and let the bike sit indoors..
I hate wet roads, specially dirty wet roads, i'd rather ride IN rain than after it. at least clean falling water washes some of the muck off..
I'm buying a super-soaker this summer, specially for getting the thick mud off the bikes as soon as i get home, before it dries.
I have the hose in the back yard but i ride past fall, so when the hose gets put away i'm screwed ..