BTW, chopstick the pics are good. With practice, your panning technique will be very good I'm sure. I don't take these types of shots, so I'm sure I suck pretty bad. Anyways, just a question/suggestion. Did you use a polarizer lens on these shots? Also, I'm wondering if a warming filter for these type of shoots (harsh light, etc.) would produce better initial images but hey that's what photoshop is for I guess. (I know these are unprocessed images). I suppose I tend to think a little old school about filters. I understand the flexibility of not using them if you have photoshop to play with, but I guess my mindset is begin with better images and if filters is what it takes then so be it. I'm definitely not criticizing your work, please don't take it that way. Just throwing out some discussion if you will, mainly because I'm still learning.
Also, nice new lens. I'm sure the IS will save you a few times.