This is an EXCELLENT article.
I grow cycads in my garden in Cyprus in the Mediterranean (4 at the bottom of a stony slope of terrible earth, and 2 in pots). This is real Mediterranean climate, we have NO rain from May till October and the cycads are in hot sun all day. They are also in the full blast of a salty west wind. They do get some water from a watering system (trickle) each day.
I also grow cycads in my garden on the northern coast of NSW, Australia - this climate is sub-tropical - the cycads there grow in a dry clay bed where the only water is rain (but there is plenty of it). They get the full sun until about 2 or 3 pm.
They are the most trouble free plants in both gardens. I love them and watch them each day in which ever garden I am in; for slow growers, they put out plenty of new leaves from their centres each season. My biggest problem is not siting the new ones I am always tempted to buy near the swimming pool! The one thing no-one wants to do is back into a cycad in a swimming costume.