This thread has served to confuse me.
I thought a choil was only a small notch that allowed you to get the whole blade on the stone without bumping it.
Kind of confused me since people were complaining about having half an inch that they couldn't sharpen.
But people are using them to rest their fingers in? That doesn't seem safe to me, even with a big 1/2" choil.
I don't find them necessary for sharpening, I just like them because there's not that big flat tang-stamp rubbing against the stone rubbing a gouge into it, which makes it easier to get the last bit of the blade.
Matter of fact I think the only two knives with choils are a Benchmade 930 and a Buck 119, and I cannot imagine sticking my finger in either one of them unless I wanted to cut it in half.