These may be suitable for you.......
These are from Private Schultz, he makes high end wood grips but just made a batch of these polyurethane black plastic grips that fit the New Vaquero- Flat Top Blackhawk grip frame. He's a super great guy to deal with, he's making me another set in white. Maybe of you ask him he can stamp out a set in something rubberized.
I may be a sinner, for using plastic on a Ruger Single Action, but I have earned that title for much worse in life than using plastic on a Ruger Single Action so I don't care
I don't feel the need to stay "traditional" with a 9mm stainless Blackhawk made in 2016, I wanted grips that still kept the "profile" of standard grips but were more utilitarian.
That said the Magnum Research BFR's come stock with Pachmayrs on them, so I don't know, maybe people are putting woods on them to get rid of that hideous rubber, or maybe given that these are made as field guns that people actually use, they leave them on.
If this were a beautiful blued 7.5" .45 LC Old Vaquero I wouldn't be using these, but for a range banger, I don't care. Best part is they were $32 shipped.
If high end grip guys are making plastic and rubber for Vaqueros there must be a market. Some people just want a durable grip for a "hard use" gun, and don't want $300 Spalted Maple Burl grips on a shooter.