I'm about to make a purchase on a New Agent 9mm myself. Will be getting it later this week. I really like the size and inexpensive ammo. Plus its on a 1911 platform. Now, if it was chambered in .45, I would only shoot a full size, but I think the New Agent would be a great purchase for a carry gun in 9mm. I've owned and carried full size 1911's in the past, and they are my favorite gun to shoot (which is why I'm finally going to get rid of my Glock that I've been carrying)...Kimber's are hit and miss in the quality department. Some people have reported slide releases and other things breaking prematurely due to the manufacturing process of those particular parts. I've personally owned 2 Kimbers with no issues (a Custom II and a Pro Carry II). I wouldn't hesitate to buy a Kimber again. My Custom II was the most accurate gun I have ever owned, and I regret selling it due to my fear from all of the internet people talking crap about it. But looking back, I had shot thousands of rounds, each one of them with no failures, and it was even more accurate than my Springfield TRP Operator. Shoulda just kept it.
Thumbs up on the New Agent in 9mm. Don't get it in 45. 1911's aren't really designed to be shot in anything less than full size, so it can potentially be problematic in a carry situation. The reason being the smaller size and thus the shorter distance everything moves as far as the slide goes, occasionally causes failure to feed. Some overcome this issue by playing with the spring rates to try to slow down the slide and I did this as well on my Pro Carry, but in the long run, it just seems to make more sense to either carry a full size 45 or a compact 9mm instead of trying to tweak a compact 45, but that is entirely up to you if you want to stick with the 45.
Also, you'll want to buy Wilson Combat mags. I've owned Wilson, Tripp Cobra, and Chip McCormicks, and even made my own hybrids...but I just think Wilson Combat makes the best 1911 mags.