(@devz3ro: many thanks for providing the scene this alternative exploit mechanism eh.)
Hopefully to clarify things, here's a summary of information about the UEEE...
(i) it is intended for those that want to boot M$'s current XBL compatible dash INSTEAD of booting a hacked dash directly;
(ii) consequently, it's highly recommended to install it as the settings_adoc.xip (NOT the xboxdash.xbe as indicated in the initial readme!);
(iii) it therefore doesn't "compete" with UXE and will appeal to those primarily wanting "simpler/safer" installs and/or Live access;
(iv) it NEITHER suffers from the clock loop NOR reset on eject (ROE/J) - which means it DOESN't have those problems;
(v) it IS compatible with XBL's update mechanism - which means Live updates DON'T fail (whereas they do for UXE installs);
(vi) as per UXE, it doesn't have "Live console" support (I'm informed they both get a 21);
(vii) as was UXE, UEEE's based upon an .xbe from M$'s "secret UberDash" (see this
linked page for related details) eh.