https://www.buckknives.com/product/110-auto-knife/?sku=0110BRSA-BI recently came into possession of this switch blade. I don't know much about knives or this brand, but it's so sharp I'm afraid of the thing. It could cause some serious damage. I've owned other blades in the past and nothing come close to the sharpness. Thinking about carrying it around for self defense and utility. Any opinion on it?