Good question, red mag. This was my first CRK. No place close enough to see them. From impressions here, and images, I was drawn to the Insingo and Micarta Inlay, but still felt uncertain. So I checked in with CRK and was told that this configuration (large or small), entitled me to the option of purchasing an additional regular blade. When I received the knife, I liked it, but as expected, it was not smooth. I knew that CRK would remedy this, and figured this was the time to exercise the additional blade option. It was reasonably priced, took a little more than two months, and came back incredibly smooth. I ended up reluctantly selling it, bought a couple more CRKs, and the extra blade enhanced the sale. As to driving one crazy, deciding which blade to go with, I saw this decision, if I had kept it, gave me two knives in one. To me, an additional blade for $135+ $35 for added thumb stud+ shipping was a decision I'll repeat on my next Insingo with Micarta Inlay purchase.