I have a C6 Z06 shifter in my car and it works quite well. It is not a true short-throw shifter in that the pivot point is not raised. However, the handle above the pivot is shortened by about an inch or so.
I have the original B&M Ripper that I really like. I guess B&M has changed the shifter and made it less notchy, but I think the Hurst, the B&M, the Kirban and the others are an improvement over the OEM shifter. It's not just the length of the lever - it's the rubbery feeling of the shifter. Cutting the shifter gives the illusion of making the shifter more precise, but in reality - you've only shortened the throw. The aftermarket shifters are far more precise, and really enhance the MN6 experience!