In my not-so-humble opinion, one should learn to shoot
both modes well.
It takes more practice to be as proficient with the DA trigger as the SA trigger, so all else equal, trigger time would be biased towards DA shooting. That ain't being a purist, just reality.
Also, if you happen to rely on a DA revolver for your SD needs, it's likely you'll revert to your "training" in a SD situation. If that training involves cocking the hammer, that's what you'll do, and a cocked hammer (and no safety) in a high stress situation is drastically increasing the likelihood of an ND. Again, that ain't being a purist, just reality.
If you want to be a real revolver shooter, be proficient in DA (ok...that
was purist
).