"ATPL study is a box ticking exercise nothing more, later down the road you will study completely differently for interviews"
So why study twice? Most of you will get multiple licences eventually - if you learn the stuff properly from the start that's a few sets of dodgy questions you don't have to learn.
Granted, you can't pass the EASA exams without the banks, but it is unprofessional not to study properly either. One reason why I don't fly any more unless either I'm in the front seat or it's one of my students