As a stickler for the rules, I feel adequately prepared to weigh in on this for you, and tell you more than you ever cared to hear about the subect!
A cologne is not a shaving item. Sure it seems like a gray area, because we keep colognes in our shave den, and likely with or near our aftershaves. And we may even consider cologne part of our "post shave" routine...... but it's not a "post shave" per it's use.
If you get all gussied up and fancy for your dinner date at Masa, you'll probably be spritzing yourself before you head out the door. That act is very far removed from your shave.
Now, if you're buying an aftershave splash and using it as a cologne.... that would be against the rules, because it is a shaving product, regardless of how you are using it. I know that's not the case here, just throwing it out there for the greater understanding.
Having said that last statement now makes me think about this...... I have a few aftershaves, that are actually labeled cologne (Pinaud Lime Sec, Citrus Musk, etc...), or there are products like Aqua Velva Musk that say After Shave / Cologne on them...... So the gray area here is how you use it. If you use it as an aftershave, it's out. If you use it as a cologne, I guess it's fair game. However, if you are using it as a cologne for the duration of the "S", and when it's over you will use it as an aftershave, well you just gamed the system and you're a dirty, dirty cheat! LOL