Depends on the design you are working with. A saw can remove a lot more material in a short time than the Nomad since it doesn't turn it into chips. But the concerns mentioned by WillAdams will get you is you are not careful. I would also have questions about workholding, depending on the premachining work you do.
For some things I do saw to close profile, for others, I machine first, then saw off waste. Sometimes both. It really depends on the application.