Learned tonight that some Algonquin languages use the Canadian Aborignal script, but not Mi'Kmaq. I wish it did--it's pretty cool. Cool enough to make to me wanderlust a little for Ojibwa.
I know that Cree uses the syllabary. I had thought that Ojibwe had switched over to Latin script, but then again I never have looked into Ojibwe all that much.
Blackfoot used to use a syllabary similar to the one used by Cree (and Inuktitut).