I was talking about watching a program as it's being recorded. Watching it live works fine, but then you can't pause, rewind, etc.
On the bright side, I've been using my iPad the last couple of days, and I haven't experienced any of these problems. It's a pretty good substitute in general. It fits in the same stand I used for the 10" monitor I'd been using for a secondary display in Windows, where I'd watch in a full-screen browser in kiosk mode (no UI, so just like a TV). I can't use my keyboard shortcuts anymore, which gave me extensive control of playback (using Autohotkey to send them to the non-focused browser window as I used my main display for other things), but the touch controls aren't horribly less convenient (for example, instead of Win+Ctrl+Alt+Right arrow to skip 3 minutes forward, I have to tap the iPad like 7 times). The main drawback for me is that I need to use multipoint Bluetooth headphones, since I've got two Bluetooth sources now, my PC and the iPad. Single-point is usable with this setup, but it does require manual switching. It was less usable with an Android tablet, because switching the audio device back to the tablet caused the Contour app to put up an info window in the middle of the screen that couldn't be closed without stopping playback and restarting from the main UI. At least the iPad app doesn't do that.
Oh, and while I considered using the XG2 with the 10" monitor, it's 16:10 aspect ratio, and there's no way to configure either device to prevent vertically stretching the 16:9 image to fit. I'd also have had to add a Bluetooth transmitter and deal with latency problems, which really limits the choice of headphones. The nice thing about the apps is that they compensate for this.