That's not what the employees say! Though it's a rare thing for me to do, it's not like I'm doing something shady, and they're quite happy to say things like "Well, give it a try, if it's not for you, return it", which I'm sure leads to customer comfort and increased sales. Usually I'm also genuinely trying a different product than the one I have, and get to evaluate whether it's any good.

As far as I'm concerned, if I can't work because they have my laptop for a week, especially because I pay for AppleCare and have to leave it with them, it's not much different than an insurance policy that lends me a rental car while mine's in the shop.