For what it's worth, I love my plug [*cough* plugcomputer interview] :-D
On the plugcomputer forums I've seen a lot of people using usb->vga adapters. Obviously the guruplug with hdmi is awesome, but there's no way in hell I believe they suck 5W [fairly moot since you're looking at a 185W PSU]. I modified one of my plugs to work in my car: http://icculus.org/obdgpslogger/sheevap5v/.
Erm. If you're not that familiar with linux, I would note that the plug isn't the most user friendly item in the world.
My plug goes from off to powered on and logging in about 15 seconds.