I love it too. I don't percieve much extra mouth feel, although the beer I primarily put it in has honey malt too and that gives depth as well. Two Brothers in Warrenville, IL has Cane and Ebel which they use Jaggery that does add depth (and horsepower.)
It is surprising because if you get a few crystals on your finger to taste, it is smoother than maple sugar.
For me, it adds gravity and I get a clean finnish from it.
I have a Indo/Pak market around the corner from the office and the guy told me they make bootleg whisky in India with it.
Oh and one other reason to try is it is cheap, a 2.5lb fez block is like $3.