For my trip to Oregon, I bought a selection of Holbein Duo water-soluble oils so I wouldn't have to deal with finding some thinner and oil mediums. I've never used these before, but a number of my painting friends like them. They do handle differently and take some getting used-to. To try them out, I dashed off a couple very fast and loose sketches. This is the consummate Oregon landscape--thick woods with a bare slope of clearcut.