On the surface MVCoverrides is a great idea. It's obviously designed with fairly expert Joomla users in mind. The problem is that it breaks (and, I mean BREAKS) the administrator when Advanced Module Manager is also installed. AMM is a must have for many of us, so this conflict would meed to be removed before MVCoverrides is truely ready for primetime.
Perhaps the developer can try to overcome this deficiency?
Works perfectly with my application which includes the JomSocial and jReviews extensions (and some others). Alex has been extraordinarily helpful too. If you need LinkedIn conenctivity, jLinked is a must have.