Hi,
I too have hands that would be great for a dentist or gynecologist. Not to worry . . . . I do my very best double action competition shooting (tactical, pin, steel, etc.) with my N frames! If shooting is great in double action . . . you know the grip to hand ratio is good. The key is the right grips.
Two types really work well for me:
Hogue rubbers for match day/Hogue wood for "show," and . . .
Magna style like you've got WITH a Tyler T.
Get a Tyler for your N frame and I think you'll be extremely pleased with the results you get. All my self-defense revolvers have been converted to Tylers, including my favorite . . . my big, custom Model 25-2 in .45ACP with it's short 3 1/4" barrel. I've won a LOT of matches with this one, in blazing times too and it is the gun I reach for always when something goes bump in the night.
It is pictured here, on top of course, with a pair of J-frames. BTW, the big N-frame's super wide target trigger face was smoothed, rounded and narrowed . . . for the best double action results:
Tom