No, I still gotta flash it. The version of ViperMod didn't have it built into it yet, but they say all I have to do is get the latest version and the option is on there. Gonna put that on there.
I don't think the blob method is necessary if you use the latest version of vipermod, as it does that stuff for you.
I think the blob file is only used if your going to use the adb method.
Have you checked out vipercontrol? The results are crazy with a little OC, though I'm gonna wait a few days now they have it unlocked, viperboy may be able to customize it a little better.