Being slap bang in the middle sounds great, but the majority on CS seem to find it pointless.
Pointless on track because it's noticeably worse than a traditional track day tyre in the dry, but doesn't offer much/any better life or wet weather performance.
Pointless on the road because the wet performance & wear is massively worse than a PS3 all for the sake of being slightly faster on a hot day. But why on earth do you need to be going even quicker on a public road than what a PS3 would allow?!
Edit: curiously the Yokohama AD08 (I think), which seems to try to be the same sort of thing (fastest hot/dry road tyre that isn't a proper track day tyre), gets a lot of praise on here. Maybe the life is nearer that of a conventional premium road tyre or it's not borderline useless in the wet?