Do y'all have ccw permits? I'm unsure of the holster I want. I'm leaning towards a Blackhawk with the lock-in button. I don't want this Sig1911 ultra sliding out
http://www.blackhawk.com/product/SERPA-CQC-wMatte-Finish,1145,1410.htm
You should really try on a couple different ones. Before you make a final decision. Like said before they (Blackhawk with the lock-in button) are uncomfortable in a "Concealed" Carry option.
I kinda felt the same way when I got in to CCW I wanted the most retention as to not lose the firearm (to falling out or someone grabing it and using it on me). Most Civilian people that carry under a jacket or shirt (in the summers) want it as close to the body as possible to not have "Printing" of the firearm, to not be called out. And where you and I live I see this as a big problem. Try to go with a IWB (Inside Waist Band) if you can. (this for me is easier when I'm going to be walking around more then sitting down, because of the way the IWB holster is and gives the most Concealed profile, (I believe)). OWB (Outside Waist Band) is how I carry most of the time. It is easier on the waist when driving and sits nice when walking around. But it can "Print" easier then IWB holsters. And most pants give the OWB holster the ability to slide it to the left or right on the waist line.
Best thing to remember when looking for a holster is that it "FITS" your gun, and that it will close on the firearm when you put everything together (ei. your pants, belt, firearm, holster). The worst thing I see people do is take a holster and put a gun in it and then turn it all upside down and shake. Why you will probably never turn yourself upside down and shake, plus that never shows the fit when the belt and your body is putting pressure on the gun and holster to hold everything together.
Also make sure everything is comfortable. I once did a drive from Illinois to Florida with a IWB holster and I hurt after I got to Georgia, 21 hours later. That is why I OWB carry in the car.
Winter its relatively easy to carry because of the Jackets we wear. Summer is the problem because of lighter shirts and sweat is not your friend to the Firearm nor the holster.
When I get home today I can upload some pictures of the holsters I use.
All my IWB holster are from
http://www.kholster.com/ Plus right now he is having a sale 15% off until March 1st.
My OWB holster is from Galco
http://www.galcogunleather.com/combat-master-belt-holster_8_4_1063.html Tho I'm not sure have to look when I get home.
All my holsters have Leather because its a little better on the skin. (I believe at least.)
Hope that helps. In the end its how you want to carry your firearm and how much you want to spend.