Join Date: Jan 2009
Location: Northern Ireland
Wow, just wow. A GW employee actually pointed you toward a product which would get you more value for your cash! The Inquisition will hunt him down if they hear of this!
As to your dilemma, I'd say paint your models however you want, but I'd advise staying with the vanilla codex rather than using the DA one.
Don't lose your characters just because of a paint job! They cost enough as it is. Either paint on top of your old job, or if you're concerned that will ruin the model due to too much paint, strip them. Check out the tutorials board here for some advice for stripping models.
Knowledge is knowing that a tomato is a fruit.
Wisdom is knowing not to put it in a fruit salad.