[ajmurmann]

I'm surprised by this comment. Having done TDD for many years now I've only ever felt the need for coverage tools on code that wasn't initially TDDed. If you do proper TDD your coverage is always pretty damn close to 100% and you are already well aware of where it isn't because you struggled TDDing in the first place.

[allcentury]

That's true until you decide to delete tests/code that is no longer in use. Then it becomes much more difficult to track down dead code paths