I stated my thoughts on the History of the 357 Mag K frames on another thread.

IF you use a K Frame as a "Light Duty, 357 Mag, ie shoot 38's most of the time and save the 357 Mags for serious use, the K frame 357 Mag makes an excellent concealed carry 357 Mag.
It makes an excellent field carry 357 Mag.

That is what it was concieved for. And it is excellent at it.

If you want a High volume Master Blaster 357 Mag, get an L frame or a N frame.

This is one of the best things about the 357 Mag. You can get S&W 357 Mags in the J frame, the K frame, the L frame and the N frame, with barrels from under 2" to 8 &3/8ths. you can shoot light target 38 Specials to full power 357 Mags AND Speer shotshells.

Sometimes I wish I was a 357 Mag kind of guy... It has a lot going for it...