I've been know to buy a used gun sporting a set of after market grips and then order a set of original factory grips to replace them...Mostly happens with my SA revolvers...It's a case of I want the gun just not the (oversized rubber) grips...:I rarely change grips on any of my short guns. All my Rugers wear the stock grips and, overall, I think Ruger does a nice job on their grips.
You swap them out??There are two trains of thought on grips ... some people go for looks while other go for fit and function. I guess I'm stuck in the middle. When I shoot any of my 1911s, I install Pachmayer wrap around grips with finger grooves. These grips fit me the best of any I have ever tried and improve my marksmanship considerably. After I get home from shooting and clean my 1911, I'll swap back to the factory grips because I don't want anyone to see the ugly rubber grips.