Aside from the fact that IBM have one of the weakest storage portfolios on the planet, how can the SVC be a good thing?
Most vendors are striving to deliver virtualisation capabilities in the array.
Adding another layer to your storage environment that still requires the actual storage to be managed is a very bad thing - how can additional points of failure and channelling all your data through another potential bottleneck help?
IBM deleveloped SVC to try compete with capabilities that other vendors already had in their hardware and that is missing in IBM's own tired storage line up.
The only people that love their SVC are those that have no clue about what enterprise storage is.