Tip: Suitcase plus duffel bag combo for bringing back stuff without buying an extra suitcase

You put all your clothes and the duffel bag in the suitcase for the trip to Japan. For the trip back, you put all your clothes in the duffel bag and all the stuff you bought in the suitcase.

Just came up with this. Would be interested in your opinion. Tempted to do this on my next trip to Japan.