I finally got around to picking up some VZ Grips for the snubby, and I'm glad I did. I got a set of the Hyena Brown 320s in G10 laminate, because I like that they look like wood. The texture is smooth, but grippy enough, and with the finger grooves and general boot grip shape, they feel nice and secure.
They feel slightly wider than the factory rubber, but the relief behind the cylinder release is a bit deeper, and and the G10 is less grabby than the rubber, so I can actually use HKS and Safariland speedloaders now. I'm hoping they'll snag on my shirt a lot less now too.
Between these and the Apex kit, I'm really really liking my little J-frame.