Digital BW, The Print

I am interested in trying QTR but I would like to know 2 things:

1) Where one can get profiles for other matte papers such as:

Arches textured
Moab natural 300
Epson Velvet Fine Art
Epson Watercolor

I do not have a spectrophotometer.

2) Since QTR uses Gimp-print, does Gimp-print interfere with the Epson driver when 
printing regular color prints with Photoshop 7?  Do the Epson driver and Gimp-print work 
seperately in peace?

Thanks.