I've seen iPads in meetings and I think it's not much more than conspicuous consumption. I enter minutes very efficiently in my iPhone with Workflowy (which basically instantly syncs to a Workflowy instance on my desktop). I find entering with my iPhone - ie the input method I use to send texts 20 times a day - a lot more natural than acclimating to the iPad's keyboard and bringing a jumbo screen to a meeting.
Well there you. I was trying ti be as inconspicuous as possible, personally, I find typing on a table with the iPad smart cover, much easier than typing on a phone. Knowing the people who were there, I doubt it was conspicuous consumption.