I’m sure that’s doable, in fact I’ve just tried out that change in my app and it was like 5 minutes work.
This is how my original login.html looked before I changed it - it has a title bar (and a subtitle bar):
<div class="bar bar-subheader bar-subbar">
<h4>Log in with your email and password.</h4>
<ion-content class="has-subheader" has-header="true" has-tabs="true" padding="false" scroll="true">
And this is how my login.html looks after I made the change - the title bar is now gone:
<ion-content has-header="false" has-tabs="false" padding="false" scroll="true">
<form name="loginForm" novalidate="">
And my top level menu definition still has the title bar defined which is the default for every page that has this view as its parent (through a UI-router abstract parent state). The login page does NOT have the menu view as its parent so it does not inherit the title bar. (Same principle would apply to tabs.)
My menu.html looks like this:
<!-- back button will automatically be rendered when appropriate only -->
So from what I can tell it’s definitely possible to mix those different designs.