That is so true. I really like your shields so I may have to change my plan on those. Mine are really fast to paint but seem rather blah and dark in comparison. Oh well.
They were quite quick to paint. Basically just think of random triangle shapes for the second layer then mark the final highlights from the outer part of the shield inwards so the size of the line thins as you make the brushstroke.
I used the Foundry Deep Brown Leather Triad for ease. A word of caution on the Foundry triads. I bought most of mine when the original paints were released and they are of decent quality.