Yep! I recently recommended this option to a fellow teacher who has students without email addresses. Glide recognizes the unique addresses of name+1@gmail.com,name+2@gmail.com, etc, but all the verification codes go to the original email (name@gmail.com).
For now, a great hack for providing students with their own account (thus allowing filtering by signed in user).
Thanks for starting this thread @Mark_Turrell to make others aware!