I did give Calvin's method a try. Painting an Alpine figure I followed the 'how to' using Calvin's Osprey "Modelling Waffen SS Figures" book and Vallejo acrylics (shudder, remember I'm an oils guys). Bottom line I didn't get Calvin's beautiful outcome but I was very happy with my attempt nevertheless. I would HIGHLY recommend this book and of course any of Taesung's figures.
On a side note, I prefer painting ancient through to the Crusades era figures, but I plan to start another Alpine figure (Kharkov grenadier) in the near future