Almost every pipe smoker I know has an Opinel knife. They're great, I have one too... but not the best for EDC. They're slow to open, and too thin to be a rugged multi-purpose knife, at least in my opinion.
I got a a knife called a Harnds Wind about a year ago just as a cheap little flip open knife, and it's actually been super reliable and useful. I love it.
![HarndsWind.jpg HarndsWind.jpg](https://pipesmagazine.com/forums/data/attachments/111/111791-28bfd204340ef0a21043b8d7a72406cf.jpg)