There is no reason to avoid the one-POV-per-scene rule. It helps you immerse the reader fully into that one character for his or her scene, letting readers experience the world through his/her eyes. Readers want to connect deeply with your character as if they are living the story themselves. When you avoid tossing the reader around among several characters like a hot potato, they can let their guard down and sink into the character. Then when you have a need to switch, add a scene change and your reader will follow. She will also appreciate the warning.
A favorite book of mine that does a wonderful job of POV control is The Memory Keeper’s Daughter by Kim Edwards. Edwards wrote her book using multiple POV’s, but uses quick scene changes to show us both perspectives. Each character has his/her spot in the emotional spotlight for each event, but each POV section is separated by back and forth scene swaps. Sometimes they are only a paragraph long and there are several per page. Readers always know when the change is happening because of the line breaks and faithfully follow.