We've discovered an inconsistency with how EHS interacts with swipe-to-unlock. When EHS is initially started, swipe-to-unlock doesn't appear, but once our app has been started and put into the background with the Home button, it (usually) does appear consistently after that.
We're interested in swipe-to-unlock always appearing, or being configurable such that it does.
If you would like the key guard to always be displayed modifiy the enterpriehomescreen.xml that resides in /enterprise/usr/
set bypass_keyguard to zero