Really weird. I feel like my spider guard is much better than my HG, but when having hard rolls with higher belts, I only ever get change out of them from my HG, and they say my HG gives them a lot of trouble.
It's such a great position. I feel like I can just fall back on it whenever. Even if I don't use it for a few weeks, I can just HG and feel at home.
It's also really good on the knees (bar the odd knee bar).