Gizmos folder in a subfolder?

Can Gizmos folders be located in subfolders?

I have an asset ‘Foo’ derived from ScriptableObject.

I can associate a custom editor icon by putting ‘Foo Icon.png’ into Assets/Gizmos/.

Unity doesn’t seem to recognize the icon if I put it in, say, Assets/SomeFolder/Gizmos/. Is there a way to do this?

(BTW, the ScriptableObject subclass is defined in a DLL.)

So the answer appears to be “No,” but you can add an editor script that runs on launch that moves the icons to Assets/Gizmos/.

Short answer: NO

Long Answer: Go and vote on this feature request so that one day the answer will be “yes”