Don't know much about motorgliders, but a Super Cub, if you can find/afford one (they're WAY overpriced these days, $70k cdn for a good 150 horse one), is ideal for the Frozen North which, suprisingly, does thaw for a few months a year. You can put a Super Cub on floats or wheels in summer, skis in winter. I myself own a Beech C23 Sundowner. I do typically fly it in winter, our field happens to be the same one used by the Prime Minister to reach his country estate...therefore always kept in good shape. Last winter I didn't fly though as I took the opportunity to get some preventive maintenance done. As luck would have it there were more good flying days than the previous winter.
Canadian pilots are indeed a friendly bunch. Get into trouble at a Canadian airfield and if there are any pilots around, they'll swarm down on you to help. It's not unusual to land at a small municipal field and have the manager/owner/whatever, often a pilot himself, loan you his personal car to go into town to visit or grab a bite to eat, or to give you a lift to a motel if you get stuck by weather. It's a big country with often nasty weather (snow in winter, thunderstorms in summer, hence the good soaring), and every pilot has been stuck at least once. So we tend to be helpful to each other. You do get the odd "I know the rules better than you" types, or the opposite "rules be damned". Fortunately the minority.
Farm strips: my buddy has one. Really depends on the tolerance of the neighbours; built-up areas are a no-no. On his farm strip the only restriction is to not overfly a local turkey farm, and the rather large 1000 ft mountain right off the departure end (for the usual prevailing winds). Soft field technique, level off, grab some speed, and immediate left climbing turnout. A 3300 ft landing strip CAN seem short sometimes!
Overall you'll love flying here. Almost complete freedom compared to Europe. Even Transport Canada is usually manageable if you don't do anything stupid. If you set up in the praries you could go NORDO and no transponder and still have loads of flying fun. Throw in a set of floats and a fishing rod, and suddenly 60% of the North becomes an airstrip and fly-through fish market...
Welcome, and if you pass through CZBM (Bromont Quebec), the gang has coffee and breakfast every Saturday morning, then we go flying. Look out for the yellow aerobatic Sundowner!
Mike