I've been thinking about getting a shoulder rig for CCW use. In cold weather I can use a fleece sweater to cover it, and in warm weather I normally have t-shirt with a open/semi-open button down over that could conceal it. It would be nice to get one rig that, with a simple component swap, could be used to carry my Glock, or my Walther. I know that it probably wouldn't replace my OWB or IWB holsters completely, but it would offer another option. Does anyone here have experience with one? Any thoughts or opinions?