Why use multidimensional cubes anymore?

Question

With the new tabular projects and the new powers of xVelocity integrated in SSAS 2012, I see that you can do most of the BI that you earlier have built in traditional SSAS MOLAP cubes. There is a big overlap between the functionality in tabular- and multidimensional solutions, so the questions is now when to use what. I see huge advantages in minimizing time-to-market and complexity using a tabular approach.

I’m now curious to hear from you, in which cases you would still prefer a multidimensional solution instead of the new tabular solution?

/Bizze