depending on the state of the tranny you will still miss gears, tri-ax made a huge difference 3 years ago when i got mine, though now my tranny is going to hell so i'm grinding and missing alot. forks have to be bent or at least off center.
the noise that you are thinking of is a metalic clinking, very solid metal on metal noise. nothing major, and i only get it in 1-2 and sometimes 2-3. its kinda a nice sound for me since the tranny is going out and making it hard to shift, the noise lets me know when i actually AM in gear. after the first month or so you will quickly forget about it.
Torinalth