The .357 out of a snub barrel is kind of like driving a Ferrari around with an engine from a Sonata and a straight-pipe muffler. It looks sexy, but it's noisy and not fast.
The "ultimate manstopper" numbers quoted often by people who love the .357 are from wheelguns with a barrel of 4" or more. Unfortunately, these numbers
drop significantly in a snub barrel of 2", placing the ballistics of the .357 round within the range of a 9mm, yet with slightly less expansion capability.
The .357 out of a snub will work, yes, but it will not work any better on a target than a 9mm out of a Glock 26. And the .357 will generate excessive muzzle flash, greater noise, be more difficult to get on target for follow-up shots, and the .357 snub holds fewer rounds.
It's simple math, folks.
The 9mm has a longer profile and will expand more.
The width of the .357 and 9mm are basically identical.
The speed at which the 9mm+P or +P+ leaving a Glock 26 is similar to that of a .357 leaving a snub with full-house loads (with 20 fps).
Source for
snubbie stats with full house .357 loads:
http://www.hipowersandhandguns.com/38vs357snub.htm
Source for stats on the Glock 26:
http://smith-wessonforum.com/ammo/125566-chronograph-info-9mm-40s-w-10mm-45acp-357-mag.html
And just to see what you're giving up using less than a 4" barrel in your .357 Mag, check that last link to see what the longer-barreled .357's will do. If you really want more power and greater capacity with less muzzle flash and recoil, you need to carry the .357 Sig. That'll gain you another 100fps over the .357 Snubbie in a compact pistol that's arguably easier to carry, and give you nearly double the capacity!