Here are a couple, my first attempts at modding my Opinels. Neither is really finiShed; both need a little more sandpaper time. Nothing original here, just some ideas I got off this forum and some others. I just rounded the heel of the 6. On the 8 I flattened the sides as well. I used some beet juice in tung oil to redden it a little. I was hoping for something a bit darker, but I guess I have a lot to learn about staining wood.
The blade of the 8 is also undergoing a transition to a drop point. The going was pretty slow with sandpaper, so I will wait until I figure out where to put my belt sander before I complete the job.
These knives both ride in the pocket much less obtrusively than unmodified knives.