The Sage 2 is an incredible knife, it is much better than the Sage 1 in my opinion, however the Sage 1 is a very good knife. The Sage 2 has better ergonomics to me than the Sage 1, how is that possible you say since they are the same handle shape? Well the Sage 2 feels much better in the hand because of the R.I.L., when the lockbar is engaged the knife becomes slimmer in the hand, you don't get that effect on a liner lock.
Also to me personally when i first got a Sage 1 my first impression was this looks and feels cheap like any other plastic, i'm referring to the carbon fiber. Mind you this was my first knife with carbon fiber so i was thinking it would be really cool and different and that i would be able to tell that it was something special because it's expensive, but it just seemed like any old plastic to me. I have to say that it did grow on me and i was able to appreciate the carbon fiber more and the knife. My expectations were just to high to begin with.
I have the Leafstorm as well, it's one of my favorites, i usually carry this one most because i don't like pocket clips most of the time, and this one carries in the pocket real well because it's small. It's very solid, solidly built, solid lockup. I like the transparent G10 some don't but it's one of my favorite things about it. The blade is real thick which is a plus and it's got a nice hollow grind. My only major annoyance is that it's a little hard to disengage the lock with one hand.
All things considered i would choose the Sage 2 over the Leafstorm, they are both fantastic knives, but the Sage 2 wins for me because of the deep carry pocket clip, the lock bar is nice and thick, and it engages and disengages very easily, and it just seems a little more versatile than the Leafstorm. I'm happy to say i have both.