SL1200G - Tonearm shape from side question for owners

I’m sure this is a silly question, I just bought a SL1200G, I’m used to a flat tone arm. This one seems to curve down a bit then flatten out where the head shell attaches. 
 

This is normal I assume? From back to front it seems to swoop down a little. It’s not flat. 

With a nicer headshell and a herbies mat, Dynavector 20x2 w/VAS Boron cantilever & Elliptical stylus it sounds amazing. I’m waiting on the custom protractor made for this table to ensure it’s lined up right.