Various ammo chrony results are showing new S&Ws shooting faster than older ones, the newer also being about on par with Rugers.
It occurs to me that a HUGE advantage to two-piece is the ability to control the cylinder gap size without having to turn the "outer barrel part" where the sight is! In other words, the traditional cure to a too-large gap is to bring the barrel in at least one full turn, to put the front sight all the way back around to where it started from. If the barrel really only needed 1/2" back or whatever, it means a lot more work, you have to shave the back of the barrel, maybe tweak other stuff at the barrel's shoulder.
In a Dan Wesson you just set the gap to whatever you want, tighten it all up, check the gap one last time, the front sight will *always* be in the right place. You might be off a hair on windage and have to re-zero the rear sight but the difference will be well within the adjustability range of the rear sight and probably won't need re-zero at all. (Best to check of course.)
Sounds like the S&Ws will work the same way, except the adjustment tools won't be made available to the general public. It will still cut gunsmithing time way, WAY down on gap adjustments.
And since gap adjustments will be easier at the factory, with luck we may see the all-too-common .008"+ gaps drop down to .003" - .004" or so where most users want 'em if they're paying attention. (I favor .002" for snubbies for max velocity but that means more frequent cleaning...)