Between my two flavors of Military, the 204P liner lock and the S90V frame lock:
The frame lock does have more load in it; like a stiffer spring, if you will. So the action feels more stiff, the detent is stronger and takes little more to open it, and also requires more pressure to disengage and close it. This is not an issue for me, just an observation. If you move either lock away from the blade, they both free drop and both are equally smooth.
In terms of the steel. I only had the S90V Military a short time, but I do have a different knife in this steel. For me, both steels are relatively easy to keep sharp or to touch up. I don't let my knives become too dull, so not sure which lasts longer, or which is more difficult to re-profile.
Both the G10 and the textured CF feel very similar in terms of grip. On the other side, the clip takes up almost 1/2 of the handle, so the difference between the Ti and the G10 is little less obvious when it comes to grip. What is little more apparent is the 1/2 oz. weight difference. Lighter is better for me.
Although this frame lock Military will not replace my beloved 204P, I am glad I got it.