Done it...hated it
I have a 637 power port, which has the steel cylinder and barrel. Previously, I had an airlight.357. I shot 25 rounds of .357 through it, and sold it. The little bit of extra weight doesn't hinder anything, but it improves shootability greatly. That little airlight even sucked with .38s. That's my opinion, though. You'd be well served by an airweight. If you don't know, the airlight is the one with titanium cylinders and a thin steel barrel liner, etc. The airweight has an aluminum frame, but everything else is steel. That's as light as I go. It's light enough for pocket carry, but heavy enough that I enjoy practice.