Wuss.I dive single tank, drysuit and BP/W. 30# isn't enough to float my rig by itself given my weight distribution. At least not during winter. There's just so much weight I'm willing to carry on my belt, the rest goes on my rig. Which then becomes rather negative, especially during winter.
It is a compromise. I dislike too heavy a belt but I am not at all a fan of random patches of weight. While I am not overly concerned with streamlining I discovered that a big wing with a single was a mistake.