Cindy -- Yes, we use Godly Play for our 4&5 year olds. We've used it for 3 years now, & both children and parents are pleased with it. Our church is starting the WoRM next month for grades 1-5, so the Godly Play kids will not be part of it. We do plan to incorporate them occassionally, but they will usually remain in their own classroom.
I do have concerns that the GP kids & parents might feel "left out" of all of the excitement surrounding the WoRM, but really, GP has been so successful here, we don't want to mess with something that's not broken.
Debbie