Has I stated in the House Rules thread linked in this thread, I follow the wisdom of previous editions. That is, I pretend SnS was never introduced into the setting and just go from there.
No SnS affecting spirits (Absolutely ridiculous), no extra hits for shock damage. If you want the same affect, buy a Taser. Beside the fact that SnS is impossible by physics, how can you tell me with a straight face that a projectile that is supposed to impale itself on teh target and then electrocute its target can penetrate a spirit that has ItNW which makes its armor like that of a TANK to even electrocute anything!!!
Yep, SnS and Emotitoys... No, no, no. Not Shadowrun, will never be Shadowrun. If you want to attack a spirit, use an Attack of Will or hire a Mage/Shaman.