I'm assuming this pic off the S&W WS is what you refer to. Lot of variations on the J frame theme I've never seen before. IMO a Centennial style pistol is meant to be a pocket gun. The additional 5/8" barrel length doesn't sound like much, and I'm sure proponents of extra sight radius, and extractor length will love the new additions to the line. To me though I don't like J frames with over 1 7/8" barrel unless your intention is to holster it. I notice "no lock" models actually advertised. They must be selling a lot of J frame LW's. I'm sure plenty of people will say 2 1/2" is greatest thing since sliced bread, it's just not for me.