For instance, look at how Barneys models the jeans. Barneys makes these jeans look like slacks. If I saw those jeans for the first time, I wouldn't buy them based on first glance. I want jeans, not slacks.
Don't get me wrong. If it's your style to wear jeans like they're slacks, go for it. It's fine with me. I just think it's not a good idea for these brands to model these jeans as though they're slacks.