@Morrison Jeremiah decided to do an experiment, for science.
Packed a Savinelli 904 with 3 rubbed out and 1 intact coin on top of Samuel Gawith's Cabbie's Mixture (had let them dry for an hour or so which means they retained some moisture). Had exactly two lights, the charring light + tamp, and the true light. No other lighting or tamping. Smoked for about 40 minutes walking my dog. Here are the results.
The ash retains some of the shape of the intact coin, to prove I didn't dig or tamp mid smoke.
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I knocked out the ash at home, trying my best not to mess with it, you can actually see the tobacco strands, as well as a good 10-15 minutes' worth of smoking left in the chamber unburnt.
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And this is the chamber with the ash knocked out, no wiping, pipe cleaners or other shenanigans. It had almost imperceptible moisture in the chamber, but really not much. If I'd dried the Cabbie's to how I usually dry it the chamber would be dry.
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Was it an enjoyable smoke? Sure it was, most are. Will I smoke without tamp+relight in the future? Absolutely not, don't see the reason for it.