Some enthusiasts love sharpening notches and/or choils. I have plenty of knives with them also. They're certainly not bad. Years ago though, I used to wonder why they didn't have them. Now after using and experiencing a lot of different knives in use, you drastically notice the benefit. No hang ups, hence less danger to your hand, fingers, tendons, muscles, etc.
I don't always cut to the heal of the blade, but when I do, I make sure it's a Spyderco.