Depends what your main purpose is. Sheepsfoot isn't great at penetrating, but it still will. The hole is great, like others have said, because you can use the whole knife and not worry about the thumbstuds. It's a great slicer/skinner (although probably isn't it's best application).
Tanto is great for penetrating/stabbing. Not as a 'self defense', but as a tool. Some people have to pierce a lot of aluminum cans, etc. so that might be the purpose...
If you're worried about not having thumbstuds on the sheepsfoot, you've got two options, that I know if, to remedy that.
Well, lets make it three:
1. Use a zip-tie (if you really want to, it can act as a "ghetto Emerson Wave opener") and as a thumbstud, you can vary your ziptie sizes, color, and material (metal vs plastic).
2. You can buy (I know BladeHQ has them) a 'Kwik thumb stud" or thumb bar, which really is a piece of metal you tighten on. It's intended for Buck style knifes ( like the 110, with the nail tick) but, you've got ample room to put it on the minigrip, and it'll look fine.
3. If you're a spyderco guy, you're probably already used to it, but you could do the whole flick open thing with your middle finger. I've never been able to get that down.
I'd love to show you some pictures, sadly I can't upload them, since I don't have them saved on the computer.
I'd love to refer you to the social network intented to share photographs...However, I've been flagged for spamming before for doing that. Apparently, people like to get a lot of "hits" on their account- this is new to me, I just want the people who have similar interests as I to be able to see my ideas, and share with me, and vice-versa. Regardless, if you're ever on the social-photograph network which shall remain nameless, check my griptilian photos out. It's one of my favorite knives. I don't have any minis, but I've had a drop point and sheepsfoot full size. I'm a simple man, and don't have many usernames..
