What I try to do is have two different set of ion-side-menu, but it seems the first one always got overwritten by the second declared ion-side-menu directive.
you can have have one side menu per side. for exemple, one <ion-side-menu side="left"> and one <ion-side-menu side="right">
if you need your sidemenu to be changed depending on a context value, then use the power of angularJS to declare some ng-if="context1" or ng-if="!context1" to present different sidemenu templates