Not me. MVC is pretty cool in a resume, but for our customers (those who pay for our work), it's not a show stopper.
They usually want applications that are right, fast and secure. That's all. They will not want to change the third layer of the client part in three years ! In three years, they will change every thing or nothing at all.
Layers are fun to architect and to code, but they cost a lot to create and to maintain and they are not relevant to our customers. MVC is pretty cool but really useless and expensive.
Unless, of course, you are developping applications for 4 OS and 3 plateforms... But you will then be a minority.
:o)