Has a thumb stud, blade hole or other feature to facilitate one-hand use. Some models are one-hand opening and one-hand closing as well..
This blade is full bellied with a strong, thick point for heavier tasks. It can also be used as a general work knife. The top of the blade drops down toward the tip, which minimizes accidental puncturing while skinning. The drop point blade is strong and very versatile.
I've had one of these for several years, and it has probably seen the most every day use out of all of my knives. My 119 Special is great but huge, and my Ranger is rock solid but not as easy to carry, so this is a great EDC for everyday tasks. It fit every need I had for it: fit in my pocket, blade just under 3", one handed opening with left and right hands, and framelock design (much easier to clean if it's used in, say, a jar of peanut butter). Because of this I've carried it on many trips in the Rockies and multiple times into the Boundary Waters Canoe Area Wilderness (It also survived being dropped in three different lakes). However, this new version is missing half the thumb stud. This makes it very difficult to operate left-handed, when one-handed operation by either hand is kind of the primary point of a small utility knife like this. Even as a right-handed person I use this in my left hand constantly, and the lock is designed well enough to be used left-handed, but the lack of a left-handed thumbstud in this new version is incredibly disappointing. It's such a little thing, and it severely reduces the functionality; I would not buy another Nobleman unless the thumbstud was corrected. (Then I would buy another immediately). Buck, please fix the Nobleman thumbstud, just return it to the way it was.
Yesterday, I bought a Nobleman 327 for my son while on vacation. Upon our return home. I opened it up to check it out for myself before giving him some safety tips. The knife opened smoothly enough. The only problem was I couldn't fold the blade back into the case. At first I thought I wasn't performing the right motion. So I looked on YouTube to watch a review. The person discussing the knife opened and closed it with ease using one and. His knife had two thumb studs. Mine only has one. In any case, I have still not been able to close the blade. I've tried pulling out and closing and even using the table as a back stop for the blade as I apply pressure to close it. Nothing works. I will be sending this knife in for a fully functional model. Like the previous reviewer, I am not crazy about the one thumb stud.