I'm talking about "AltGr dead keys", in which the quotes are available directly and the accents are entered using e.g. AltGr-'.
I'm using 6 european languages occasionally, of which 3 every day, including French. Of these, Canadian English would be only useful for French (e.g. it does not have a tilde dead key AFAIK) and is still different enough from US to be annoying for programming (e.g. the angle brackets are in the "wrong place"). Certainly a big upgrade from AZERTY though!
EDIT: My remark on the Canadian English layout above is based on the first layout that showed up when I googled it, but now I noticed that a lot of different variants come up in the search and I don't know which one you're using. In any event, they all seem to be weaker either for programming or for non-FR/EN languages or both.