[Van]

Surprised the Latex didn't completely come off. Most stains being Oil based don't react well at all with Latex, as a matter of fact usually the first brushing will cause orange peel, and subsequent brushings, will tend to peel the paint right off. When I'm doing this style of finish I tend to use all latex based paints. As latex can be thinned ridiculously, it can work as a stain really well. The issue that most people have with thinning Latex down so far as to use it as a stain, is that it tends to lose it's binding characteristics, causing it to not "stick" as well. Since you are ultimately going to be sealing the entire peice with polyurethane this really souldn't be a problem. Another great way to add depth to a Faux finish like this is to add a thin layer of clear acrylic between "stain" coats. These layers of clear will really make the finish look super high end.