I have and have have carried both. I currently prefer a single bladed knife. A case copperlock. I dont really like the pattern, but I like how slim it is, and it was given to me. I have an old timer stockman that i really like, and have carried. I've carried mostly stockmans. I find though, that with a 3 bladed knife, i tend to neglect the blade's edges until they are all 3 dull, then have a long sharpening session ahead of me. With a single bladed knife, i tend to sharpen it up as needed after a day of usage, so that it will be sharp the next day. This makes for easier maintenance.