I'm not sure that turning toward the runway from downwind at LPMA is such a good idea, with the runway being so near the high ground.
From down wind I think that a turn out to sea away from the high ground direct towards FUSIL is the safest way to go, once the turn towards the runway has started you are commited to that action and this should only be done if you are 100% sure that you can stay visual. If at that stage a GA is required then you must contunue the turn to pick up the track towards FUSIL but I would want to stay in visual contact with the island untill I was heading out to sea.
At Chambery the turn towards the runway is undoubtedly the thing to do and then follow the 18 backcourse. but this is not altogether following the 18missed aproach as you are only following the second half of it but may be this is splitting hairs.