I am predominately a Maxwell Render user. I am using Cycles on particular a project though. One thing I like that I can do in Maxwell Render, is that I can easily pump out lots alpha masks for compositing based on an objects material or by object name. It is very straight forward an simple. As an example, I like to adjust my leaf color in post on my trees. So I can have a mask created of the leaf material only, that way I can isolate the leaves only and adjust the color or whatever I want to do with them. Can this be done with Cycles in a similar fashion?