Maybe I'm missing it (smallish text I'm finding hard to read), but I don't see anything in that literature that says these are not lubricated at all. Since in pretty much every wheel train jewel you have a steel pivot riding in a jewel, and those are all lubricated (with some exceptions) I don't think the fact that it's not metal on metal automatically precludes the use of a lubricant.
There are modern reversers without jewels that don't get lubrication on the ratcheting system - Rolex comes to mind specifically, as only the pivots are lubricated, but those are a different design. With modern ETA reversers, it's either a very small amount of 9010 (barely visible on your oiler) or you dip the entire wheel in Lubeta V105, which is a solution that carries a lubricant in it...
Interesting marketing, but in a watch setting far from reality, as rust doesn't just randomly show up inside a watch. If it does, the rolling elements in the reversing wheels are probably the least of your worries...hey my watch is rusted solid, except the reversing wheels so it still winds...yippee!
Also as someone who used to work for a company that made rolling element bearings, the #1 cause of failure was improper installation, usually in the form of failure to lube the bearing properly (too much grease, not enough grease, wrong type of grease, etc.) at least that's what the very extensive legal department our company had was there to prove in case of a failure.
The whole using jewels instead of steel rollers is mostly marketing. Reversing wheels fail in a few ways, but it's rarely the inner working part of the wheel itself that does the locking and unlocking. Modern ETA reversing wheels for example use a ratchet and pawl system, metal on metal contact, and that portion of the wheel rarely fails - here's what those look like:
If anything is going to fail it's usually the pivots wearing, so 99% of the wheels I replace are due to this:
Sometimes it's worn right off - old wheel on the right, new one on the left for comparison:
And in extreme cases, the teeth of the wheel are worn right off - again old one on the right and new on the left for comparison:
But it's fun to look at the old brochures to see how these things were marketed.
Cheers, Al
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