I have an engineering background, but for the current project I'm trying to help my client out with UX and navigation. My client has drawn an Android app that I am implementing. In this app, the navigation goes pretty much all through the navigation drawer. For instance, clicking on a drawer item opens a new "section" (view), and from this section the navigation drawer is always available, by swiping in the screen or via the menu button in the top bar.
My question is: are there any major drawbacks in this "total" drawer design? One of the advantages my client has seen is that every section is available from everywhere, instead of having the user first navigate back to some base screen and then having to open the drawer, and this seems reasonable to me.
Thanks for your attention and contribution.