I had a real problem with the GEC sunfish. I don't have nails long enough to scratch with, nevermind use the nail nick. I've always pinched the blade right at the nick, and used it as a grip to pull open the blade... there wasn't enough blade to grab on the sunfish - 1) The second blade was in the way, so I could only pinch at the smallest sliver and 2) the false edge up top meant my fingers slid right off. I was told by their customer service that they could attempt to relieve the backspring, but could not guarantee a fix.
I regretfully sent it back to the retailer (as it's a gorgeous knife otherwise) in favor of an EZ-Open version of the sunfish. I'll miss the second blade.
With some of their products, I get the impression GEC makes knives for collectors rather than EDC users. The massive, beefy backspring looks great, especially with two blades on the same spring, but they went for form over function, here.