It seems like the Impinda availability is so poor that is practically unavailable for anyone that isn't dedicated to stalking the secondary market or willing wait several years for a new one. It doesn't seem like any retailers stock them and the stated lead time for ordering direct from CRK is 4 years.
I recently picked up the Quiet Carry Rincon (Blade Length: 3.2 in, Handle Length: 4.2 in) and the size feels much more pratically useful for my medium sized man hands (3.5 in wide, 7.5 in long) than any of the CRK smalls or larges. I would like to see CRK make a medium Sebenza or Inkosi in this size.
I am honestly surprised that CRK doesn't make any locking knives with handles in the 4.3 in - 4.5 in range . In my opinion, it would be a good long-term business move to discontinue the small and large Inkosi and replace both of those models with a medium Inkosi that sits midway between the two Sebenza sizes (3.98 in handle on the small / 4.79 in handle on the large). It seems like the handle on the small Inkosi isn't very ergonomic for the majority of adults. There is so much overlap between the Large Inkosi, Large Sebenza, and Umnumzaan that it makes sense to shrink one of them down to a medium size, if they want to offer a medium sized locking knife without reducing their production rate.