The application note for ENMTools is now available in the Early View section of Ecography's website. Due to the limits of space, the note really only discusses the measurement of overlap and the identity and background tests (i.e., the tests that were presented in Warren et al. 2008). Papers that present the rangebreaking tests and niche breadth measurements are on the way, and should be out fairly soon.
I'm going to be putting out an update of ENMTools shortly which will add a couple of interesting features and fix a few minor issues.