The banded-wrist shoulder press acts as a great prehab movement, a great workout exercise, or a great finisher for the shoulders.
By pressing OUT while also pressing IN, you help promote mid and rear deltoid activation, proper scapular movement, and joint centration.
This differs from a conventional cable press because, just like the scrape-the-rack press, you're required to exert force in two planes of force simultaneously.
As long as you're strict with the execution, it won't take much weight to really get a good hit. Likewise, don't underestimate the tension of the band. Using the heaviest, strongest band will make both patterns suffer. Keep the band resistance moderate as you'll struggle to maintain good form after a couple of sets.