That's really a question of what you intend to do with the knife. My Small Buck Vantage Pro does fine for a lot of tasks, and I don't ever expect to see it fail on me unless I do something with it that a knife was never intended to be used for.
I personally find my Spyderco Para2 in S90V and Carbon Fiber to be somewhat of a gentlemen's knife. The steel is top tier in edge retention, and the carbon fiber is very nice in hand and extremely light.
I do like the blue anodized thumb stud of the Sebenza, but other than that there really isn't much color to the thing unless you fork over money for the "blinged" models.
This one in particular caught my eye:
Still, the flip side is that the S30V blade offers an "average" performance depending on your standards(mine are unreasonably high

).
For me, a gentlemen's knife has to look small, slim, and have some color to it. Unless you're cutting something tougher than cardboard, lock strength and durability shouldn't really matter. If it's edge retention kind of "durability" you're after, I'd have to again suggest the Benchmade 480-1 Shoki, at least to consider.
Look at that beauty:
Only thing might be that the Sebenza seems like it would give you a more firm grip on the knife. Also not sure how important tight tolerances are to you, because I feel it takes a special kind of knife nut to really obsess about that

.