Yes, I clearly remember that being one of the reasons it was so hard to get a group with my paladin and I know Iksar SKs were really hating life lol. Bad enough that we had such huge penalties to begin with, but to make it harder to get groups because they didn't want to take on our penalties just made it worse. Glad they got rid of that, but I wish it was before I had spent months leveling up my Paladin.
The defined penalties all look pretty accurate from what I recall about them at the time, but that was about 8 years ago lol. Also, don't forget to add Drakkin in there as they will need to get exp for people using SoF as well
I think it would be safe to assume they would get a 100.0 mod, the same as humans since they are essentially the same in most aspects.