I'm also in the camp that gets FANTASTIC use from the big gangly Pachmayr grips, typically I use the Gripper version rather than the Presentation, but they all work.
They scream
"1980's!" in look and when shopping for used guns, anything wearing a Pachmayr gives you first shot in talking down the price.
Pachmayr grips will likely never be collectible or valuable on the market, because they made a GUJILLION and as stated, they do have a service life before they dry and start to look worse and feel lousy.
But that doesn't change how well they work for many of us, and in years gone by, they were so much the standard that you could spot the guys who didn't shoot much, because their revolvers wore OEM Smith & Wesson wood stocks.
The S&W Magna stock in particular, original stocks to most K-38's and K-22's before the larger target grips... well these stocks are simply awful for normal folks. Because these stocks are so uncomfortable, accessories such as the Tyler T-grip, Pachmayr, Herrett, Sile, and Hogue were born and built in to extremely successful businesses.
It's fashionable these days to slag Pachmayr grips in every discussion, but my safe has probably two dozen guns wearing them and they work for me.