Ok so here is the impression I got from Ethan. The proto in the photo I posted earlier is the bk20 proto, not the bk29. That was what John Moses (kabar knife designer) designed and gave to Ethan. Ethan then worked his magic on it and boom the bk20 was born. Now because kabar is nice and people are still wanting the bk20s they decided to come out with the so-called original Moses design that is basically the same as the proto of the bk20. I played with both the bk20 and bk29 for a good while at the gathering and the difference in performance is negligible. The clip point is curved on the bk29 and goes back farther. However. The biggest difference is the fact that the bk29 has more blade height especially near the handle. This makes the edge thinner than the bk20 and perhaps more "slicey". Ethan seemed to think this was a good thing and an improvement. So who are we to question the boss man.