I generally hate the way choils look on a blade, and I agree, they waste space that could be used for a longer blade. But a couple of years ago, I got on a kick of carving wooden spoons and forks from a dead cherry tree that I had to cut down years ago that I saved all the wood for smoking meats with.
And you know what? I really found myself using the choils all the time. The specific models that I used were the Ontario rat 5 in d2 ( What a wonderful knife that is- seriously, especially after I rounded out the blocky handles), the Esee 4, the Esee 6 were faves.
I also carved a few things with the MK 1 navy knife from Kabar, and also the traditional marine utility knife from Ka Bar ( that 7 inch blade was the worst carving knife ever, but an SUV isn't a race car, either ).
Overall, I respect what a choil can do, so Im ok with them, but not on all my knives for sure.
John