I must be missing something here, the whole idea of a watch, for me, is to accurately tell the time. I have a sundial in my yard for "slow" days. Interesting concept however.
ColtNzNot really if you learn to read it quickly, it's only going to be off by a minute or 3. I don't see it as much of a difference unless you're looking for a field watch. Which in that case personally I wouldn't go automatic, to beat on in the field unless it's super cheap.