I took a look at the web site and it looks to me that the "G-SD" designation is essentially a 92/96 FS with a light rail and tritium sights. I couldn't tell if there were any other differences than that.
My hypothesis would be that it's a good gun just like the other models. I have always liked them and had nearly bought one on a couple of occasions but they are just a little bulky for my taste. I really enjoy my little 84F though, it's the baby version of the 92F chambered in .380 with a double stack 13 rd magazine.
__________________
______________________________
|