I've always thought that before a couple gets married, or shacks up together, or whatever people do, co-habit (?), they should go on a camping trip together. There's nothing like putting up a tent or camp cookery for testing a relationship. Many folk get on fine as long as they are in their element. But take that fish out of its usual pond and turn up the heat with some unfamiliar activities and tempers can quickly fray. Putting up a tent can be a challenging experience, or least it used to be but maybe the makers have simplified things, that even requires working together and co-ordination. Maybe throw in some map reading and mountain navigation just to test things further. Any fools can go to the pub, the disco, a film or a restaurant and not be challenged. But putting up a cramped tent on a rain and wind lashed Scottish mountainside and then trying to heat up some kind of food to keep body and soul together will almost certainly test any relationship to the full. If it can survive An Teallach, it should be sound as pound for many years.