I've only gotten to watch seven out of twelve episodes, and so far it's been pretty good. Though, I did get bored at some parts (typical)... Partly because the show only revolved around the two female protagonists and didn't give too much attention to the other characters. It's pretty sad, but with only twelve episodes I guess there isn't really enough time for good character development.
~_~ I have to admit though, I feel sorry for the first characters, the Fourth Division/Squad/Something (specifically Tooru and Natsuki) that showed up in the pilot episode. They seemed far more interesting than Kagura, Yoshi and the other members of the Ministry of Environment. I feel that they were worthy of at least an episode that focused on their background story and their asskicking prowess. Sadly, I don't think that will happen.
You have to admit, katana-weilding, uniform-wearing exorcists/slayers are getting p-r-e-t-t-y old.