If you want a shorter reset in the sig you'll have to purchase a sig model with the SRT installed (an Elite model), or send your sig back to the factory for this installation, or send it to Grayguns for either their carry or competition short reset package.
I have an SRT on my 229 and love it - it's mega, super, uber short. When I compared the foward travel required for a reset to my dad's G31, it seemed the same, though I didn't laser-measure it so ya'll will have to take it with a grain of salt.