I did at first, but then I figured, why bother?
The 4790K runs all day long at 4.0/4.4 .
I don't need more.
With good cooling, that might go to 4.6 at a higher vcore than I want.
If you oc, monitor your vcore. Once it gets past 1.25 or 1.30, your heat goes up quickly. A good cooler can keep cooling it, but you start to get into a more dangerous voltage range. Particularly for 24/7 operation.
For gaming, I think you are better off with a 4790K than even the new 8 core haswell E chips.