As an iPad developer, I'm wondering if there would be value in having some sort of "Product Gallery" type of SaaS -- an app that you load on your iPad, combined with a website that lets you manage the products and info that you'd like to show with it.
If a staff member still has to carry a notebook around with them for when they need to get 'real' work done, then employers aren't going to decide to fund iPads and employees aren't going to want to lug around yet another device for their job.
I've got a few real-estate software ideas in the back of my mind that would do away with the requirement for a physical desk, phone & computer for most real-estate staff who are more productive when they are out of the office doing things. And I think this is the way iPad business applications need to progress if they are to gain any serious traction.