I clean after smoking, except when I don’t, then I don’t. My pipes are pretty utilitarian, a small collection of used and abused basket cases and one or two that cost me *almost* $100 and that I no longer take fishing with me because they’ve been dropped in the water too many times for comfort.
Well, maybe once and a while I’ll run a cleaner through before a smoke, but the thought of a pre-smoke polishing up just never crosses my mind.