No, there are plenty of handheld jig saws you can use, if you have one.
OP, I'd just use whatever power saw you have handy, it doesn't matter, they'll all slice the mat for you. I actually just cut mine with a sharp exacto knife, just scored it deep several times, then hit it with a rubber mallet and it broke off nicely. But a skilsaw (circular) would work well too, you'll just have to get it up off the ground onto some sawhorses or something.
Solaris -- 16 hh Appendix Quarter Horse = MY DREAM COME TRUE!We Are Flying Solo