The IOS Native Pro plugin is 100% with any other plugins you want to use.
The only restriction is the App Delegate API. In order to implement this API, we had to override and extend from IOS UnityAppController. This means, that when IOS Native App delegate is enabled, you can't use another plugin that wants to override UnityAppController. The result will be a plugins conflict. Offcourse when App Delegate API is turned off, nothing is overridden.
The IOS Native Pro plugin is part of Stan's Asset Native Plugins family. Just keep this in mind when update.