No, it does NOT need them. I've got a little differential (it's built in if you follow the directions) but the plane lands at a literal walk, or less. People stand and gawk and it on the ground and in the air. They don't care it's an ARF. Mine weighs 9 lbs. with a Super Tigre .75, and it floats around like a kite. Wonderful plane! I'm not a huge fan of ARF's, but I've thoroughly enjoyed this one.
Here's a pic of it along with my kit built Cap 232.

Phil in Austin...