I would agree with you Paul. I always get signed permission from whichever firm is asking me to print or embroider their logo. Over here it is totally accepted that it has to be done. and even down to my towns logo , I have to have written permission from the town for every customer. Doesnt matter if Ive done it before for another customer before either.
But others on here say otherwise and I respect them for what they say but It is a minefield...
My thoughts, if you dont need the work then dont do it. If the customer is serious he will have permission and a decent logo.