Well, with thousands of hours on toe brakes, at first I found my heels digging for heel brakes in the Decathlon. It was a little negative transfer from the Cub, to a similar seating situation. However, after about four attempts to apply heel brakes, I adapted. Now I have no problems with either.
Toe brakes are attached to the rudder pedals, and so when you want to apply rudder in the air, you are of necessity moving a whole bunch of stuff that is not helping you. That's fine in a Cessna, but the Cub is a light and feathery sort - you wear a Cub.
Still opinion.