They were called the "Chief's Special Airweight" before they went to the numbering system that, is.
As such, they are as good as any S&W snubby, which is excellent. My beef with the model is the presence of an external hammer, which I believe is a needless redundancy on the dimunitive sized Smiths.
Through experimentation I have found that for anybody with normal to larger hands the tiny grip does not allow enough of a purchase to use proper single action form. You end up holding the gun with the middle finger and half of the ring, at best, with your index finger precariously trying to reach for the trigger. When the gun recoils, it smacks your middle finger with the trigger guard because it was not properly supported. Adding hand filling grips defeats the concealability of the revolver.
The answer is simple: fire DA only and you'll find your accuracy will surprise you, the gun will recoil less because it is well supported and it will be concealable, except for that pesky hammer. And it works just fine with the factory boot grips - another plus.
After you can fire decent groups DA only with enough speed to satisfy you, then you will probably find yourself looking for one of the hammerless Centennial models - 640/42/342 etc. I think S&W still makes the hammer snubbies as an inside joke; many are bought as badges of rank or nightstand guns that the folks have no intention of ever firing, except - just in case.
Sort of expensive male jewelry. YMMV