I'm not sure my college "supports" Linux, as I'm not sure exactly what you consider supporting to entail, but my departments (astronomy and physics) only have linux computers in their computer labs (with the addition of one or two windows boxes. All of the personal computers and laptops owned by faculty and staff are Linux or Mac). Of course, the IT guys are incredibly lazy and it's still Fedora Core 1.0, but it works most of the time. If you're talking about software and hardware help, I wouldn't even trust the University with a windows computer-they are notorious for breaking things and voiding warranties, and most of the people working at campus computing services don't know what they're doing or even care.

I myself am debating this question for my next laptop. I do a lot of image processing on astronomical images, so having that dark definition that glossy gives is nice. However, glossy tends to saturate more easily and has a worse greyscale response, which means that the display of the relative brightness of things is skewed--it kind of ruins the data. If only there were something in between...