Will this work with Bag of Holding?
My players love BoH but don't want to give it up for this functionality. 

It's written in the documentation that this plugin works with Bag of Holding. What concern do you have exactly? The point of this plugin is to enhance other plugins such as Backpacks or Bag of Holding.

Note that the way it works with each plugin is different. With Backpacks, players can choose whether to retrieve from each page, and you restrict this capability via permissions. With Bag of Holding, the functionality applies automatically to all bags, same as it does with vanilla backpacks.

Thank you, WhiteThunder. I wasn't aware the functionality was already built-in. Thank you!