A great approach to work in. I did this too, (2 samples on my website) but not in a wash, just ink brush. it really forces to you think quick and simplify. Great work, keep it up!
sabe2003, the samples you mention are very cool. I love way ink looks from a brush, and I often do that myself (most often as warm-ups before doing the same in watercolor). I really like the art on your website. I'll have to be sure to follow your work!