The problem with using an iPad in a corporate setting or medical setting is that it would be hard to administrate. If we were to buy 50+ iPads now we would have to set up 50+ iPads individually, roll them out understanding that if one of them goes down we would have to manually restore them on an individual basis. Right now we can restore a pc remotely in 20 minutes without ever having to touch the machine itself. We use images of the pc operating system and all of the needed software to backup and restore a machine. Not really a viable option for the iPad.
Another issue for the iPad in a medical field is that nearly all of the medical networks are on a domain. The iPad would have to be able to join a domain natively using kerberos. When you are dealing a a legally regulated system such as HIPPA you have to have a strict amount of user access control and penetration security. Sure the iPad is secure for itself, but it would not be for the group. The ability to control what apps a user can install is a must. Think of a user transferring a patient files via dropbox. Even innocently this would be a huge HIPPA violation.
Most of the software in the medical field is currently written in Dotnet, Visual Basic or Java. I think we all know how that would work on an iPad. I don't even have to continue this paragraph to get my point across, but I will. Software used in the medical field must play well with others. Documentation software should be able to inter-connect with imaging software, billing software should play well with documentation software and so forth.
I shouldn't even pick on this, but screen resolution would have to be better for a medical tablet. You cannot diagnose a medical image using any screen. We use 21" Planar screen with a resolution of 1200x1600. I'm not saying that the iPad would have to be that size, or that a doctor should be able to diagnose on a mobile tablet. They will try though. Doctors usually use a tablet to show a patient their image...usually. Imagine a doctor missing a tumor because the screen wasn't up to snuff.
Printers are the bane of everyone's existence. I don't know of a single administrator who likes printers. The technology is so old and so fragmented that there are literally tens of thousands of independent drivers floating around. Printer technology and fax technology will be dead one day. But they aren't yet. They are still a very real and necessary means of transferring information. I shudder at thinking what it would take to add 20 printers to an iPad to work in all of the applications. HP and others have created a work around to printing from the iPhone but it would once again need to be a native ability.
I'm not just picking on the iPad here. From what I understand the HP slate will use Win7, but a home version so joining it to a domain will not be possible either. You would have to completely install another OS onto a JooJoo to even think about any of the things I have listed above.
All in all we are getting real close to having a tablet that would work in a corporate environment as well in a consumer one. We aren't there yet, but I'm betting that it will be a windows solution. Apple is missing out on a real opportunity to completely own a field of technology. Apple's attention placed on the user experience would go over very well with a medical staff. They are very aware of how many clicks it takes to perform a task and how their overall flow works in a clinic.