A few years back (maybe 10), there was a major dumping of J-frame revolvers in Central Ohio, I ended up with 6 and am down to 2. A couple of the 38 had Pacs and the rest had factory wood. With the ammo I use-Speer Short Barrel 135 Gold Dot +P- the Pacs are a lot more comfortable. For me accuracy was about the same. But for Concealed Carry, everything (Shirt tales, sweat shirts and light weight jackets) cling and snag on the sticky soft rubber. I kept two round butt J's and put "Tyler T-grip" on both (49 no dash & 36-2) My brother ended up with a 37 that he only uses for ankle carry. His is a square butt with factory wood and a T-Grip, It is undiscernible in jeans or dress pants!
All of these are 38's, I don't think I could use a 357 J-Frame with wood grips. Dad has two but only uses 38's and wood grips without T-Grips!
When I was in my mid 20's, I bought Super Blackhawks in 44mag, 45 Colt and 357 Mag. With the factory wood I couldn't hit worth a hoot, with Pachmeyer Deaccelerators or Signatures, I shot them great.
Ivan