re: Perfecting Perfection (Festool Carvex Benchtop Attachment).

My take is that there are plenty of times when I needed to close-tolerance cut the center out of a wood ring for routing. Can't use the BS without cutting the blade and this here is a good solution. I can use the JS as intended, but for these cases I'd rather move the workpiece than move to tool to make the cut.

There is no universal tool so making what one has more flexible is always a win in my book 

(full disclosure: I don't actually have a book)