Actually it worked pretty well on moving targets for me last night. Apparently much of the problem has been addressed. It's MUCH better than it used to be.
I used ShS at least 20 times last night, and in only two or three times did I step into thin air. When it didn't work perfectly I just hit sprint to catch up to the opponent. I was amazed that I caught up to hunters as well as I did with ShS alone. Maybe it's because I have a really fast connection.
Seriously, I didn't get kited once in about 6 hours of BG's and 1 hour of Arena last night. As far as I'm concerned its better than improved sprint because it's instant.
Edit: It doesn't break roots or Frost Nova's though. That said, last night I cheapshot shotted a mage and got a hemo off. He frost nova'd me in place and blinked. I stepped up to the mage, kidney shotted him (while still frozen in place) and finished him off. Funny as hell. :)
Edit: Gawd my typing sucks.
Edited, Nov 15th 2007 2:07pm by Vvillain