I believe Frank Thorp V is shooting handheld speed graphic along with a handful of other things. He's in DC covering Congress for NBC News.
Another of the Congress photojournalists, David Burnett, has a quite intimidating 4x5" SLR that was custom built for him around an Aero Ektar, with apparently some Graflex parts. I imagine he has to use some fast film and some wide apertures, as he isn't pictured using a flash in any of the photos I've seen.