How about boots that are calf high, and have hidden compartments for a short hilt, meaning you could carry two "spares"?
Yeah, that's a great place to carry a spare or two. Just make sure they don't activate and cut your feet off! I was also thinking on the belt in the lower back area and have the saber horizontally fixed. I also like up the sleeve like Sideous had. You could activate them and have arm mounted sabers. I've always loved that idea. Much like the Dark Templar from Brood War.