Hey Sundogchicky,
Welcome to lose the straps!
From my perspective, it is good to learn as many tricks in different directions, hooked, or unhooked because it adds to your skill. For instance, I have a much harder time with pop-shuvit to handle-pass vs. 180 to handlepass because I usually pop shuvit hooked in. I need to develop better skills doing pop shuvits unhooked, but I would not say you are lame for only doing it one way or not wanting to learn another way. Just the fact that you are riding a skim makes you cool