They don't really take me much longer than the black and white ones either, reproduction is the only obstacle. I've got a great hook-up, two actually, and i'll take advantage of them a lot more in the future, starting now.
I did both of these new ones this last weekend, plus a bunch of other stuff. I'm going to do non-gigposter painting too. The few people that have bought my paintings in the past were drooling when i showed them these.