While people say the 10mm is close to the 41 mag it is like saying the 357 sig is close to the 357 mag.
Yes and no. Yes in the 170 grain bullets are close in speed but the heavier 210 grained 41s are a lot more horse power and penetrate better.
The idea of the 41 was to give more power to a police officer than the 357 and where it failed was it was only available in N framed guns. Hunters then picked up the 41 and used it for large game.
The 10mm is the brain child of Col. Copper who wanted an auto version of the 41 mag.
The 10mm became a handfull as the FBI adopted it and the 40 S&W was created that fit into 9mm framed guns and gave the ballistics of 44 Special or 45 ACP with the 185 grain bullets.
I guess the better question is what are you going to do with the gun?
CCW, Either or should not matter. A full moon clip or a speed loader as spare ammo you will want to think of over penetration and where the heavy fast slug is going to go after you defend your self.
IDPA, steel challange? The full moon clips would help, the availability of 40 S&W at cheeper prices are a plus as well as the lower recoil for faster follow up shots
Hunting, sillouhettes, or bowling pins? more horse power and heavier bullets would be beneficial
Poking holes in paper either or I do not think there is a difference between the two and an N frame is an N Frame loaded with 10MM/40 S&W, 357 mag/ 38 Specials, 44 Special, 44 mags, 45 colts or 45 ACP. A large smooth revolver that is fun to shoot and can be had in barrels from 3 to 8 3/8".
Some are just cheaper to shoot then the others.