I'm a fan of the T-tops just not on the 5th gen. Had two 4th gen's with T-Tops never leaked, but it took GM a long time to it right. Had a Monte Carlo SS that leaked from day 1, was forever in the shop to get it fixed. Just say'n, I'd be a little scared of leaks.
But, that's cool for those that want them, they can have them now.