I have several snubs I carry. The ones I seem to carry most would be my:
64-6 Factory DAO with 2 Inch barrel
66-2 Factory DAO with 3 Inch Barrel
SP101 357 with 2.25 Inch Barrel
SP101 357 with 3 Inch barrel
The above SP101 2.25 is in 38 Special and has the works. Polished, Full Shim Pak, Springs, Little Wonder front sight by Gemini Customs, and the fancy Lett style grips by Altamont.
The F Model Jet Loader for a J Frame/SP101 is shown with my Big Creek belt carrier. My current 2.25 Inch SP101 is just like this one only in 357 with the XS Front night sight, and Pachmayer grips. No picture of it so far.
The description of the first one covers my 3 Inch SP101 also, only it has a Green Fiber Optic Little Wonder front sight instead of Red.
I also have:
315 Night Guard 2.75 Inch Barrel
15 Snub with 2 Inch Barrel
10 Snub with 2 Inch Barrel
GP100 Adjustable Sight with a 3 Inch Barrel
LCR 22
I just traded off my 442 Pro Moon Clip for the SP101 2.25 with an XS 24/7 Big Dot front sight.
I belt carry in a pancake 99% of the time. I can carry the SP101's or a Steel K frame snub with no problem at all.
RELOADS were mentioned. I have Jet Loaders for my 5 shot SP101's. I carry them in Big Creek Kydex Speed Loader belt carriers that I make.
A also use Jet Loaders for the K Frame. They are a hair smaller in diameter than the Safariland Comp III for the K Frame. I also carry them in Big Creek Kydex Speed Loader Carriers.
I use Safariland Comp III's with the GP100.
My 2 Cents.
The 627 Snub is a neat revolver. That said it is heavy. I have carryed a 3 Inch 625 in a pancake, and while doable it is not nearly as handy as an SP101 / Steel J or a K Frame snub.
If you want a big 357 for concealed carry look for a 327 Night Guard. While the same size as the 627, the difference in weight will make it carry about like a steel K Snub.
As was said by several above Steel J's / SP101's and K frames are both carryable, as well as shootable. If you like to shoot your carry revolver stay with a steel revolver, they are much more fun to shoot. Several above are carrying SP101's, why? Tough, easy to work on, and the BIG ONE you can change the front sight without spending hundreds of dollars.
If I were going to carry a larger size revolver than a K Frame it would be a 3 Inch 686, or GP100. I would probably lean to the GP100 for a couple reasons. The Willy Clapp version has Novak 1911 front and rear sights that can be changed to Night sights, different color Fiber Optic, etc very easily. ALL the regular fixed sight 3 Inch GP100 have a pinned on front sight, so they can also be changed to fiber optic or Tritium. My 3 Inch GP100 is a little rare and has Adjustable Sights, which come standard with a Quick Change front sight.
The 3 Inch 686's do not all come with a pinned on front sight.
A 6 shot 3 Inch 686 is also hard to locate at anything close to a reasonable price. You can find a 7 shooter fairly easily, but you are stuck with the HKS 687 or 5 Star Turn Knob Speed Loaders, which are OK, but not as fast as a Jet Loader.
I skipped the 2.50 Inch 686's. They have a small disadvantage over a 3 Inch. That being a short ejector rod. You can live with the short ejector rod if you practice doing combat reloads. If you get the muzzle vertical, slap the ejector rod hard, and are prepaired to hand pluck a piece or two of brass from the cylinder if needed, you will be happy with a 2.5 Inch 686. Same deal with the 2 or 2.5 inch K Frame. Practice your reloads under pressure. I shoot both my SP101's and 64 Snub in BUG Division in our Clubs Defensive Pistol, and ICORE Match. Note: BUG is not a sanctioned ICORE Division, just one our club has added.
When you start shooting your concealed carry revolver in Defensive Pistol matchs you will discover a couple things right off the bat. You need to shoot it a lot to get and stay accurate, and you need work on your reloading skills. If you are shooting an airweight J frame, you will also discover you need a more shootable revolver. I shoot everything I carry. This is the reason I am out of airweight J frame size revolvers, except my LCR22. It is still fun to shoot.
Bob