He had a lot to think about, and when he thought, he was quiet. He also tended to think most of the time, not just when a lot was happening. So, yes, actually, strong and silent type did fit him well.

"I've known a few of those." Seifer. Zell. Selphie. They could each be loud. And while Squall hadn't seen her abilities firsthand, he was willing to give her the benefit of the doubt. She certainly talked like she knew something about what she was talking about.