Laptops, HDMI out -- any experience?

Hi everyone,
I am planning to use a decent laptop (Dell M 1330) as my future primary system, preferably in conjunction with a large (24 inch) widescreen second display. I will be using the system both at home and at work. To avoid unplugging and replugging a gazillion of cables when moving around, I want to use a USB hub (for external drives, mouse, keyboard, etc.) and a HDMI connection to a monitor with audio out (which will go into my hi-fi amp). This would leave me with only one USB cable, HDMI, and the power cord. So far, so good.
Now my question: Does anyone have some experience to share with this kind of setup? In particular, I would be interested to hear if HDMI audio output (via ALSA, for example) is already stable enough to work as intended? I also worry whether changing between various second monitor profiles could be problematic, since at work I do not have a HDMI 1920x1200 widescreen display, but some DVI 1280x1024 one instead. I would very much like to have some kind of convenient switching mechanism between both (I suppose this may be a case for xrandr).
Any laptop user here who has already solved this or a similar task? Do people actually use the HDMI out for other applications than HDTV? Information on the web has been quite scarce...
Thanks in advance,
S.

Thans for the answer!
vogt wrote:hdmi in xf86-video-intel looks pretty new: http://lists.freedesktop.org/archives/x … 37457.html
Unfortunately I am going to get a laptop with an Nvidia chip (GS8400)... any first-hand experience?
vogt wrote:I wouldn't be surprised if the audio part didn't work, but maybe it might inexplicably work as in here: http://forum.uabit.com/showthread.php?t=124521
Let's hope so

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