I would suppose that one can argue that whether there is going to be a try-out or not before the official release, any fan of the Apple Watch would have already made up his or her mind to drop some serious coin for it a long time ago, and so, the try-out is but a formality, and to provide some relief from the curiosity itch.
According to Timothy Arcuri of Cowen and Company, who paid a visit to Apple retail stores in the San Francisco Bay Area over the weekend, he managed to speak to employees concerning the try-on appointments, and it does sound as though most of them would be more than willing purchasers of the upcoming Apple Watch. Does this mean that we could be looking at a 1 million pre-order range? Very likely, although nothing but patience will see how the cards are eventually played out.