Eh? Don't you want the business side to be properly seasoned? I was always under the impression that a properly seasoned wok* (they were traditionally sold with a block of lard, to use in the seasoning process) should basically be non-stick. Like this guy's:
I gather it's something to do with the high temperatures and fat/oil combining to either extract or add carbon from/to the steel, making it more non-sticky.
See above: a quick sluice of water and a gentle brush ought to be plenty. Although I can well imagine the process being drawn out as a cover for a rest and a natter, and who'd blame them?
* I've never managed to achieve this myself, mind. We're not a meat-eating couple, although our children sometimes do partake, so lard is off the menu. I'll try the sesame oil trick one of these days.