I've always liked the mid-lock and I've been interested in a plain edge Caly3 for some time. About six weeks ago I caught a CF laminated zdp-189 on sale and grapped it. I thought I would go right back to the Sage II once I played around with the Caly for a bit. Nope, I'm in love with it. I haven't even considered any of my other EDC rotation since I put the Caly in my pocket.
If you haven't tried this knife you should. Its an older design but one of Sal/Erics's best efforts.