This isn't answering the hardtop weight question... But when I went looking for the Jeep I wanted... I'll I wanted was a hardtop and hard doors. I figured that I could have always bought a softop, but a factory hardtop was the only way to wheel Washington State in the winter. Snow wheeling with heat!!
And yes, for our 3 weeks of summer, it is awesome pulling the top and, as Jeffy puts it, going commando!!
Nothin' sexier than seeing me driving around topless, or in a bikini
(If I do say so myself!!)