With special thanks to Daniel & the CanVec product team,
They have figured out a way to get the original .shp files into the OSM format and also figured out how to create the address:interpolation, data (for those provinces that have the data available).

Daniel has provided 6 sample datasets, so then the community will be able to proved feedback. Covering most of the available feature types, to get a better idea of the complete set.

osm.wiki/CanVec#Sample_Datasets

Feel free to Open Up these sample files, and take a close look at them. We recommend that you PLEASE DO NOT upload anything, (unless your actually close to the area or plan on visiting the area). (I plan in visiting Halifax in the fall :) ), and i contacted the local area mapper & awaiting a response.

So if you have comments / questions about this data, please feel free to join in the talk-ca@openstreetmap.org discussion list, and the community welcomes new ideas :)

I am working on the Fergons Cove and Purcells Cove area (just south of Halifax City) & keeping the main road that was already in OSM & just ehancing the map with this data. Yes, it meant adding in more detail to the main road, but it preserves the whole length of it, as im just working on 1 side-road section at a time.
& the for the larger waterbody area & fixing the coastline, i will leave that to after i get in touch with the local area mapper as it covers a big area & dont want to mess up any local area work.

That's all for now, I'll report back later :0)

Happy Mapping,
Sam