All of our Themes Work Fine with Child Themes but, We don’t recommend to create a Child Theme for our Extended Themes. All of our Extended Themes have Custom Code within Head Area Box where you can use Custom Styling for your Sites. Thus Theme Updates doesn’t remove anything.
You can change any Styling of your Site using This Technique. Child Theme may not work properly or may not show your site as expected if you can’t manage all things of a Child Theme.
We don’t recommend customizing/changing Theme Files. If you do that, your customization/change will be overwritten during Theme Updates. Why do you need changing Theme Files when you can change any Styling from the Theme Options Panel. Please remember that all data like Options/Settings, Posts, Pages, Menus, WidGets etc. are stored in a MySQL database, not in any Theme Files. So, all of your dynamic data is remain as it is during Changing Themes or Updating Themes.