If you mean loading the files, that is not an issue. You should use our SDK Tools to build a compressed version of your application.
If you mean having all the views rendered at the same time (for example, 10 views in a card layout), then perhaps you could dynamically add them using the Ext.Container.add method.
Sencha Inc. Robert Dougan - @rdougan
Sencha Touch 2 and Ext JS 4 Core Team Member, SASS/Theming Wizard.