All good Jeffos, Starting to test now when I get time.
Thought I'd mention something that is probably obviously on your "to do" list but just in case.
Was about to test out the new contextual toolbars in reaper 5 (since I've ran out of toolbars in Reaper 4 just on static ones) and noticed that toolbars above 8 are not registered yet in reaper 5/SWS in the contextual toolbar editor.
No rush for that but thought it worth mentioning.