I'm pretty sure it never was. I think proliferation still left some powersets out of some ATs specifically to push people into trying different ATs. SS was never a Scrapper option, like Ice Armor was never an Option for Brutes.
I'd recommend going the Brute route. You get SS, and can achieve Tanker levels of survival with IOs. If it's /Inv, I don't think it would take too much to hit at least the S/L def soft cap, and you could put in a fair amount of recharge to really up the damage output.
I originally made a brute, and was OK with it till I realized all the colors in INV were "dark", and no way to adequately match the default light colors using customization. So that's when I thought, "OK, screw it, I'll make a scrapper". Well, that's out. So I went back to tank. And honestly, other than the powersets being swapped I don't really notice much of a difference from level 1-13. I think in longer, drawn out battles the brute might pull ahead in terms of damage, but that doesn't really seem to happen very often, especially while soloing. Things die too quickly for Fury to provide a buff that gives one a clear advantage. Of course things could change later on, but when I originally made this character in 2004 I made it to 50 as a tank without too many hurdles. so I'm sure I'll be just fine.