"Big question. Would a dom that undergoes such training still be considered a dom or a switch"

Good question. If they were training, meaning doing it for educational purposes, wouldn't that make them just interested, involved doms? It seems to me that in order to be a switch, you have to have "intent to switch".

Realizing that this vears off-topic, would a sub who takes up the cane because their dom/me orders them to, be a switch? I'm thinking it would depend on whether they enjoyed it.

Back on topic, I agree with Nikka that such training would be a very good idea (and that subs should try domming, to get a better idea what their dom/me is thinking or experiencing).

I had the same impression as vanillaslave for about two decades before I discovered that this was more an "ideal" that S&M dabblers aspired to than a "rule". Like Camelot, it's a good ideal.

My two cents.