I have them… if you’re going to do much reprofiling, they’re totally worth it. Also good for making repairs.
But you’re right, they are aggressive, and leave scratches that take longer to get out. I had a real good example recently… I had a knife that didn’t need much work, but the area around the belly toward the tip was really messed up, so I used the 50 –> 80 stones in that area, then worked the whole blade to around a 5m finish. When I was done, I noticed that the area around the belly still had noticeable scratches. So, it would take a bit more work to get them out. But for me, the speed benefit outweighs the polish… the polish will come out in a couple more sharpenings.