Thanks for posting your message.Sometime this fall I hope to hit the history/genealogy thing harder than I have lately.I have made similiar conclusions in regard to my Loyalist John Cuffman of the Prince of Wales American Regiment.
I purchased a book titled "The Trail of the Black Walnut" by G. Elmore Reaman and it speaks of the Loyal settlers that left German areas of Penn. to settle in Ontario after the revolution.Nothing ground breaking there but it does mention how the German/Dutch people were more enclined to be Loyalists than Rebels.If nothing else neutral.
For what it is worth there are quite a few DeMerchant's that are Engineers or simliar professions.Probably a coincedence but I thought I would mention it.
I'll keep you in mind and I hope you will keep in contact with me.