Hi DaveH,
The Sebenza is a very well made knife, as well they should be. After 10,000 + being made all the bugs were worked out of the computer program long ago. They are simple, work well and are affectionately referred to a "Gray Turds".
Most of the tactical folders do meet the "Specs" of the Sebenza. I think makers like Bob Tezuola, Phil Boguszewski, RJ Martin, Scott Cook, Kit Carson, Rick Hinderer, Bob Lum, Mike Obenauf, Pat Crawford Allen Elishewitz, Darrel Ralph and many others would beg to differ with you.
Addititionally, these makers offer many additional choices of handle materials, steels, and finishes. Then there are the different models that each maker offers .
I realize I missed some makers, which ones did you look at that did not measure up?
WWG