I've been carrying the 740 (big Dejavoo) now for about 3 months. Yes, very smooth opener. Overall, I'm very pleased with it. It's very light for such a large folder, and carries beautifully, although with jeans it's a little long for front pocket carry...fine with BDU's and such. In back pocket or waist-band I don't even know it's there. The G-10 scales are smooth so if you want a "grippy" knife then maybe it's not for you. The nice thing about that though is it's very slick to remove and stow in pocket. It won't wear out your pants either. One of my favorite things about this knife is the flared handle/guard at the pivot area. With the knife clipped to the pocket (low rider type clip) it's the most naturally deploying folder I've used; just reach down and grab that flared handle with thumb and fore-finger and she's out before you know it. The wide flat ground blade is (haven't used this term in a while) "wicked." It doesn't sound like a steel trap when locking; I had to get used to that. It's like a "snick" with mild "click" thrown in. It is a solid locking, hard using (despite it's elegance) knife. I'd hate to be on the recieving end in SD situation. The only thing I don't like is having to tweak the oh so sensitive pivot screw (torx T-10) about once a week. The Spydie style thumbhole is very natural, though I haven't tried it with gloves-that could be an issue for some. Overall, IMO, Mr. Lum did an outstanding job. Hope this helps.
Almost forgot though, right hand only opening.