I'm in just about the same boat as you, being product evaluator for the company. What's funny is that the iPad has actually made it easier for our field guys to do their work. The most they do is key in a few numbers, print and/or scan a few pages, take photos, and possibly map shapes via GPS. Doing this kind of work on a laptop is doable, but tedious. The iPad has made a one-stop device that is portable, easy to use, and has a shallow learning curve.
The Surface RT on the other hand doesn't play well with the scanners we have, doesn't have 10m GPS support, and in general is hard to use fully without the "keyboard" it came with. It's the 2013 equivalent of a netbook, with less compatibility. Battery life was great, but I think that was due more to non-use than use. It's been on my desk since we could get one and no one has taken it for more than a weekend. The only question I have after each evaluation is "did you like using it?" to which the response has been a resounding "it's kinda cool, but I don't see it replacing my android/iPad".
Anyone who is using an iPad for full-fledged document, spreadsheet, or powerpoint creation is either unprepared or extremely advanced. No, it's not a great device for creation. But it's a great device for quick edits, consumption, and presentation.
As for the androids, it'd be nice for the manufacturers to standardize things like keyboards. Half the time I have to google image search the keyboard layout because it isn't exactly the same as the device we have.
Microsoft is late to the game and trying to use their last bargaining chip- the Office Suite. The problem is that many iOS and Android apps exist for that already and do everything else better. Too little, too late.