Well, as I've oft said before (I'm a recent convert to the notion, actually), I see no reason why something as important as God should not be subject to scientific investigation. We've already exempted him from needing to be explained or to explain himself, and we've allowed him to sidestep the laws of physics. Making him immune from proper investigation requiring real evidence would be the last straw. Testimony needs corroboration by independent witnesses, and I sure wouldn't like to be convicted of anything on the grounds of intuition or someone's unsupported personal experience or anecdotes.