Extrema ratio are not so good knives....

Costs too much.
The N690co isn't a good steel, is similar in performances to a 440 c. Extremely hard to resharpen, and with low toughness.

Here in Italy Extrema ratio imposes a price range to dealers.
I don't know there in the US, maybe a lower taxation can help.

The only good blade is the small "schrapnel" because it does not need toughness, but only edge retention.

Kukris ( KS , KH , KL ) have great geometry, but I'm afraid they will fracture, if used seriously.

_____________________________________ Mess with the best, die like the rest