Digital BW, The Print

Has anyone used the new Piezography Museum Bright White paper with 
UT inks? Any existing curves that work well with this paper? I'm 
using a 1280 with UT inks. The paper sounds good and is cheap - 13 x 
19 (25) for $46... Cheaper than Epson scrapbook paper.

I was also wondering if the 1280 can handle 300 gms paper. I know it 
will handle .27mm thick paper (Epson site specs), but I don't know 
how to convert the numbers (gms to mm to mil to lbs???). Also, at 
what gms (or mil, mm, lbs.) should one start using the thicker
(envelope) lever setting?

Thanks,

Jim Batzer