/signed, if mana pots are nerfed too.
Torc is a game-breaking easy button. Any content designed for players without it is trivial for players with it.
No other item in the game gives even remotely close to the same increase in power as the Torc. eSOS might make you 15-25% more effective and it was seen as 'so good it must be nerfed' - Torc gives much, much more.
Some encounters would need to be redesigned without Torc, however. Epic LOB would need other ways to recover SP in the fight (perhaps the Forge buff).