Nice.
I've never been a fan of exposing DC voltage connectors, rather I favor the use of a simple DC voltage module, such as this one:
http://mpja.com/productview.asp?product=7537+ME
A nice clean and elegant way of monitoring those voltage rails, but you still need a decent voltage reference, because as with any meter, you never know exactly what the actual voltage really is.
So I have a Fluke 8840A meter...
