Just a heads up: your wife's SIG doesn't have a clip, it has a magazine. There are almost no guns these days that use clips.
I hate to sound like a firearm elitist, but when I see people confuse "clip" and "magazine" I see it as a symptom of our country's general ignorance about guns. And ignorance about guns is what gives us ridiculous laws like the "assault weapons" ban.
And on topic: The UpLULA is a pretty good product. It makes loading a magazine a lot easier, especially when you get to the last few rounds of a double-stack mag.
0331: "Accuracy by volume."