I use it, having tamara on the phone helps with her a LOT
it's also a good option to not get only one part of alignment specific scenes and to choose your favorite picture for each girl instead of it depending on her inhibition and corruption
but it's not mandatory for me, there is a trick to raise sophie and tamara points faster using get lucky as well, all you need to do is rollback after you get any relation points to before the prompt shows up, you will be able to get the maximum amount of points you could get with that scene