The only possible issue is that the Vintage Industries have a plastic inner liner instead of the steel liner Pachmayr uses.
This could be good or bad.
The Pachmayr steel liner sometimes tends to protrude out of the rubber in the areas where the grip is designed to contact the frame. This contact of the rubber area is how the grip is positioned, but if the steel protrudes it can leave slight marks on the frame.
A possible issue with the Vintage plastic liner is that it isn't as strong as the Pachmayr steel and there's a possibility that if you tighten the grip screw enough to secure the grip so it won't shift on the frame, the grip can collapse.
As the grip is used the plastic may tend to collapse a little more, requiring the screw to be tightened more, causing more collapse.
This can also be a problem with some Pachmayr grips.
I have Pachmayr Compac Professional grips on two S&W Model 66 revolvers, and I have had the collapsing problem with them.
I'd think that as long as you don't over tighten the Vintage grip and it's tight enough not to shift or move on the frame you'd be okay.
The steel inner liner of the Pachmayr may not protrude and that's a stronger grip.