From what I've read, Sig used to use Trijicon and now use Mepro, and they are a tritium illiuminated sight. So, yes, I believe we are talking about the same kind of sight. I'm a life long hunter, but kind of a pistol newb, this will be my first pistol, aside from a couple of older .32s I inherited. Primarily buying for home-defense and for the range to get some practice.
Thanks for the advice.