I love these passionate debates.
I have never used a glossy screen and do not profess to know anything about them, but you may find this reference amusing (assuming it is genuine, which I can't guarantee, I merely picked it up from another thread and put zero research tim in it)...
http://www.eizo.com/support/wp/pdf/wp_07-001.pdf
Bear in mind that some of the fiercest posters above refer to Eizo in support of the incontrovertible truth that a glossy screen is absolutely not acceptable for photography.
Calibrating a glossy screen is probably difficult however, if at all possible, which I don't know.
The bit-depth issue is probably also a serious one.