I wear my Suunto D9 out of water as a watch - it is a bit bling, but you can get away with it. I am sure there are other computers you can probably do this with as well, but I haven't yet seen one. The D9 is air integrated (wirelessly), although I don't use a transmitter myself.
The flip side is that underwater, particularly the bottom row of the readout on the D9, the digits can be a little small and it can be a pain scrolling through them using watch sized buttons to find the data that you need.
The flip side is that underwater, particularly the bottom row of the readout on the D9, the digits can be a little small and it can be a pain scrolling through them using watch sized buttons to find the data that you need.