Well don't overestimate Toshi. One hour of singing like Toshi did, it's even hard for him to get out a clear voice later.
Personally, I like that he's got his 'roughness' back, but I think he needs to work on it a bit more. It's not that easy to get the right tone with screaming like that and while it might sound awesome in live then listening to a recording of it later, you notice the parts where he's a bit off (not much tho, quarter tone or so). Might just be my bias against singing, I've been singing myself for over half my life.