Good review!
I've had the Twitch II in my shopping cart a dozen times but never followed through and bought one.
I like the size, the flipper, the blade style and grind but the smooth metal handle is a turnoff.
I have a bunch of smooth metal handle folders that i like the overall design of but i rarely carry them because i prefer to have some texture on the handle surface.
Also any blade play would drive me nuts,lol.
Have you tried tightening the pivot?