Editing alloy HTML with HML Body One Little Designer

I am wanting to make some changes that require html changes to stacks. I am fairly comfortable with navigating. I just want to go about it the most stress free way.

Has anyone used One Little Designers HTML Body stack to make html changes to the Alloy stack?

I have been able to make many changes but I want to add a text to the login box (one example). I know I can do it with Cyberduck and edit the html file but curious if HTML Body is compatible so I don’t have to make a copy of all my html changes and re-upload when Rapidweaver overwrites the changes.