CRKs pocket clip is one of best, if not the best in the business for functionality and fit in hand. From time to time, especially when not wearing a belt, the pocket clip is a great option and functions perfectly. Have carried with both the clip and a sheath in the past. Really like using a sheath actually just because it frees up a pocket for certain things that I'd rather not have in there with a folder (keys, change, etc...). All my Seb sheaths are made to fit the Seb without a pocket clip attached. Can't go wrong either way, but for me its nice to have an extra pocket to put anything in and the slightly slimmer profile without the clip provides a different feel to the knife that I've really come to appreciate as well. If you go the sheath route, I have to recommend Vess Leatherworks. Absolutely top notch in every regard. The sheaths are made exactly to your specs, plenty of options, great service, outstanding workmanship and excellent communication. Could not be more pleased with every transaction I have had with Vess Leatherworks. Never have had to worry about retention with these either, I carried a full horizontal sheath for a while with my small Seb and never had any fear of it falling out, just can't say enough good things about Vess sheaths. Hope this helps some and good luck with your decision!