I finally had to chime in.
Try bringing an electronic E6B with Tom Funk here in Phoenix. Yeah, he can't tell you NOT to use it, but when you get in the air on a flight test and it is turbulant, you have to use two hands on the thing if it is bumpy, and some things take forever to input on the electronic one. He'll then fail you for taking far too long with the calculations.
I use one for preflight planning with students, and then teach them the mechanical one for in the air. All of them prefer it that way now... eletronic on the ground, mechanical in the air. I let them try it both ways, and they agreed with me.
But the best question is this: What is your SCHOOL's policy. If you are going to an academy, and it is there policy you use it and learn the old school one, guess what? You don't have to use it. Just find another school.
I don't always agree with the "STUDENT IS THE CUSTOMER" thing. Yes, he is always the customer, and that means I treat him with respect. That DOES NOT MEAN HE DICTATES HIS TRAINING TO ME!!!!!!!
I told my students if they don't want to learn an old school E6B, that is their choice. However, they won't be getting any instruction form me.
Try telling a college you won't be taking CompII.