Do it if you: a) have some spare time, and cash (that you dont need to spend on a decent mic or outboard), b)you were like me - a dumb musician who only used the software as a tape recorder and wanted to actually make the most of your investment.
It doubled my workflow speed, as I had never bothered with all the short cuts, but I am just writing for other people so never needed to be quick in the studio like a specialist engineer needs to be.
But that is it. It's whether you can justify it for your own personal PT use, as has already been stated here, a high level of software technical expertise should be a given for professional work and can be achieved through experience.
Best way to get good on PT is to record as many different musicians and groups as you can. All the short cuts and tips are on the web anyway. (attached is a list of 7.0 shortcuts, most of which still apply)
