In particular I wanted to check the Source Control section in Domino Designer Preferences. Ideally I wanted to warn the developer if binary DXL is enabled (by default it is enabled). I am aware that there is a menu to export your Eclipse Preference setting but I have not been able to find a way to do this via code either.
Turns out you can read the file com.ibm.designer.domino.preferences.prefs located on folder \workspace.metadata.plugins\org.eclipse.core.runtime.settings\ under your notes data.