You don't know what you don't know. Seriously. Revolvers span the gamut, just like semi-autos do.
Grip/stocks are easily changeable and can literally be customized to a mold of your hand. Why? Because there's no need to have a magazine in the middle of your fist. There is much more room for customization on many revolvers. You can adjust any dimension, angle of presentation, even material...and generally with nothing more involved then a screwdriver.
Sights? I have Novak sights on revolvers. I can put any sights on my revolvers you can put on your semi-auto. Not every revolver is a black trench/black post sight system. Some come with night sights, fiber optics, etc.
I don't even know what the ergonomics thing means, so you got me on that one I suppose.
Look up thumb print/thumb nail. Or @Mas 's wedge grip. We didn't ALL learn Glocks first, trust me.