grr... it annoys me when everyone always says "Wait for SCI Studio VGA", hehe. I've said it before and I'll say it again--SCI Studio EGA and SCI Studio VGA use the exact same scripting language. EGA games will be no harder to make than VGA games, or nor are VGA games any harder to make than EGA ones. They use the same language. If you learn SCI Studio EGA, you can A) make VGA games the day SSVGA is released with your current skills, B) port your EGA games to VGA with minimal work.
Also, most people want the VGA so they can import bitmaps as pictures. However, you'll still need to use the vectored picture editing for the priority/control screens. Plus, when SCI Studio's SCI01 support is done, you'll be able to import bitmaps as EGA pics too!