First of all, I feel Mike's pain. I got nabbed a few weeks ago for tint and had to take it off the front doors. Just had to have it re-done last week.
Tartan, I had my black SVT tinted with 20% all around except for the front windshield for many reasons. A few being that it's much more comfortable in the blazing sun and it saves the leather. Another is the privacy, it just feels like you're in your own little world. Plus it somewhat hides the fact that I have money invested in the DVD/audio system. I also love the look, especially with the black on black. it puts your SVT in stealth mode
