It's getting more common. Seiko recently released the Seiko 5 GMT which for the MSRP of $495 is a steal in the watch world, possibly the most affordable GMT on the market now. There are lots of "GMT Watches" you see on Amazon and other places for much cheaper but all of those use Quartz movements.

I mean specifically the travel-time in Patek's parlance; a jumping hour advance for a second hidden hour hand, the best contemporary example would be the Parmigiani Fleurier Tonda PF GMT.