Personally I'd go for a Sebenza over an Inkosi, well I did, the reason they are superior to most other folding knives is the tight tolerances and pivot bushing system, which is lost on the Inkosi, and this is why I think the Inkosi is a step down from the Sebenza. One of the main things that seperated the Sebenza from 99% of other folding knives on the market was the fact that you never needed to adjust the pivot, or dial it in.
This was (in my opinion) what made the Sebenza special, it's one of the only folding knives that is truly designed to be taken apart and put back together without risk of stripping the screws (It has deep allen key heads that do not strip out like shallow torx screws) Then you just tighten the pivot down all the way, and the pivot bushing removes any chance of getting the tension wrong, it's always going to assemble perfectly every time, and you cannot over tighten it, it will open smoothly no matter how tight you screw down the pivot, it also does not need loctite.
The Sebenza was designed to actually last a lifetime, I don't know why you would want to wrist flick a knife open, my Sebenza can be thumb flicked open without using any wrist.
The Inkosi in my opinion is not as great of a knife sa the Sebenza for the reasons I just said, it removed what seperated the Sebenza from other knives, sure it still has great tolerances and perfectly surface ground scales, but it's lacking what made a Sebenza a Sebenza, I wouldn't buy one.