I found a neat suede and nubuck leather cleaner! It's from Sofsole and I got it from DSW by the counter where all the polishes and cleaning stuff are--$4. I tried it on my Gryson bag and now the suede lining is nice and clean! The pen marks are almost gone-- if I make some more effort, it might remove it. It's a small kit with a white eraser and a brush.