Now this is what I call a useful iPhone case! Don't even think of taking it on an aircraft, though.
Interesting idea, but it actually makes both tools less useful. It renders the iPhone less mobile as you'll either need to take off the case or leave the iPhone behind when going places where knives are not allowed (places that are increasing daily). As for the tools, the iPhone's form factor doesn't really make for a very practical handle for short knife or oddly placed screwdriver. Frankly a small SAK will provide more tools in a more practical (and just as small given the additional thickness required for the case) package.