I had Leatherman's E304x with a 154cm blade. The knife was ok, but I hated the blade launcher. In order for the blade launcher to work, the blade retention indent on the linerlock was pretty shallow, making the blade too easy to open. Had the knife for a couple days, but I felt insecure having it clipped in my pocket. On a couple of occasions, I accidentally caught the thumbstud and/or blade launcher, causing the blade to partially open in the pocket. Fortunately, I had an understanding retailer who accepted the knife back. I now have a Spyderco UKPK which is very secure in the pocket and I can forget its there.