Hi Zagadaga,
I’m glad you like the product. First, we are literally right around the corner from Cornell, and currently have CU interns working for us. To your question: If you use a Bluetooth module which uses pins which are not used by the motor shield, it should work fine. This page: https://shop.wickeddevice.com/product/motor-shield/ contains all the info that you need to evaluate this and select an appropriate module. You will also need to modify the sketch - it is open source and also on that page.