Such fast enterprise adoption--a trend largely driven by employees--often leaves companies feeling more than a little panicked. Here are three pressing questions about the iPad, based on Forrester's research:

Let's face it: Making an ROI (return on investment) case for a major iPad spend could be a tough job for a CIO. Even Forrester's Shadler admits the business benefits are "still materializing." But there are signs that the iPad does improve productivity, especially in areas where perception matters--board meetings, sales presentations, and field service engagements.

"We have heard this from almost every major company: It makes you and your IT organization look great when you can give your C-level staff and board of directors an iPad instead of handing them a 400-page binder," writes Schadler in a research note.

At Conceptus, a Silicon Valley medical device manufacturer, nearly every executive (as well as salespeople) has an iPad. One top executive rarely touches the iPad, while the head of legal uses it every day. She always brings the iPad to meetings where she's often asked a legal question. Rather than sift through reams of paper notes, she quickly finds answers on the iPad.