I tried 6 or 7 different watches in one appointment. But the specialist was careful to never have more than two out of the drawer AT THE SAME TIME. He said that was the only rule he had to follow. He kept the drawer closed and locked except when he was bringing out a different watch.Reports say everyone is limited to 2 tries max.
But some seem lucky to try on more apparently.
In my experience, this is standard jewelry-store technique. It's theft mitigation, trying to be subtle and polite.
I think the original poster had the misfortune to get a somewhat confused specialist who was helping one of his very first customers.