Pretty cool idea! The only problem I see is that the diagonals are too light. BTW, you might consider making a filled-in version of the font, so that people can layer the patterned one over it, in different colors.
hhp
I'm working on this shapes since 2 months, and I really need your mind now...
(don't think there is grey in this image, that's only proud and honest black) 
