Just opened my P4 LW. A couple of things jumped out at me. First, this knife is big! I mean, I read the stats and watched some videos on YT, but that is no substitute for holding it. If I could legally carry this thing, I don't think I would keep it in my front pocket. I'd consider keeping it in my back pocket, and I'd probably carry tip down (gasp!). Two, for a brand new lock back this thing is smooth. Much smoother that I remember my Endura being. Lock backs aren't considered "fidget friendly," I'll be opening and closing this thing nonstop. I really like the way it feels. Three, I think I miss the Boye detent. The lock isn't uncomfortable or hard to use, I just miss that indentation. I could locate the lock much easier. It's not a big deal at all, but I now know I prefer the Boye detent. And I won't consider adding my own. I don't want to mess it up. Finally, I sold my Endura because the handle wasn't as comfortable as I wanted. The P4 LW is great. With a handle that big, I think it would be hard to not find a comfortable grip (and I prefer the finger choil as well). Well done Sal and Spyderco.