Installers are something from the Bad Old Days of Classic. If I never see one again its too soon for me. Unfortunately since I'll probably have to buy some more Adobe product I know I'll end up subjected to another installer coded up by some mouth breathing troglodyte.
I'm also a member of the "test drive from Desktop" school. Partly because I've seen some updates to programs that broke features I liked so I dont always want to replace something that I know to be working.
Whereas I feel sorry for the users who are too stupid or lazy to drag A to B, I must say that the article demonstrates a great way of handling this. It gives people the choice of quickly putting something in Applications or not.
Draggable .App bundles are the best thing since sliced cheeze and I wish other OSen had the same concept.