I just finished a quilt as you go quilt (pictures in the picture section- thread says something about Shadow Trapunto).
I didn't necessarily find it any easier to do than a regular quilt- putting it all together was difficult, it just moved the difficulty (the wadding of the quilt to get it thruogh the machine) to another step.
It is a tool I'll keep in my arsenal, but it won't solve all problems for me. Only if I want that look.