I do alternate covers, but there are a few that I won't take to the course.

I changed both. I don’t like the Velcro covers so I had a custom magnetic one made. I change grips for performance and feel.

I'm really on the fence about changing the grip on mine....it's still the original that I try to maintain some tackiness with through cleaning and even a spray from time-to-time. But I just like the idea that it's the original grip after all these years.

Headcover is a different story. The velcro on the original is starting to lose its holding ability and sometimes comes loose when my cart hits a bump. So I switched it out this year for a magnetic closure option.

you gotta change the grip eventually, if you are using the same putter for many seasons, i have put a couple on my newport 2

I am a big fan of the Pistolini grip and have it on the putters I rotate through. I also rotate headcovers on a regular basis. My current one is one I picked up at the Gallery this year that is the blue with the dancing dogs.

I put the Large Matador grips on most of my SC putters. (x3 and counting) They just seem to work for me, I hold the headcovers back from the course and use after market ones (usually funny) so people don't know what I have in the bag, and keeps the OG headcovers nice.