She arrived this afternoon! I gotta say...it's one beautiful lens. The size is perfect and I love the Sigma finish (same as my Sigma 70). It feels nice and solid and has a nice weight to it (not feather light, but not heavy by any means)
This sucker is sharp right at 1.4 and at 4 is stunning. AF is quick on K-7 (I don't have any issues with BF/FF with my copy - checked that this afternoon) and shooting a bit around the house this evening in medium light was nothing short of astounding.
Granted I haven't pixel peeped any images (I don't tend to do this anyway), but from what I'm seeing thus far I'm very pleased.
Looks to be a fabulous lens
Thanks for everyone's help!
c[_]