This has been regular carry for many years, summer in particular as sweat resistance is better, and while large and heavy is extremely controllable in the modest 9mm caliber. +P is OK to use fortunately.
It has the usual DA/SA and decocker functionality which makes for a very safe carry mode. Trigger pull on first shot DA is as expected quite long but very smooth and transition to later SA mode brings no surprises. With practice this is fairly seamless.
This shares commonality with two other SIG's by having Crimson Trace grips. These are not only slightly better to feel than factory grips but have the added advantage of producing the dot under all but the brightest of lighting conditions. There is no need to seek the dot, as normal pointing and sight acquisition will enable the dot to show, so no bad habits need be acquired.
Gobango.net web site - see this picture and many more, plus articles.