It's a shame the giant doesn't come with the cone collar/ring.
I nearly bought one until i realised that.
i have gotten used to having the mega on my hammer with the cone in use, it stops my fingers accidentally covering the airhole, and generally makes it feel better in the hand. I vary between extending it further out with an additional 510 extender and close in without. Without a cone it would just look stupid though on my setup, especially considering I don't anything like a 7 twenty (or whatever they are called) to marry it up to.
Apart from that, it looks the bomb. I wasn't sure about the giant when I first saw it, seemed crazy, but I am starting to get the idea now.