>>8688417>>8688908This turned into a pretty long winded rant, tl;dr it's not creepy if it is conducted in a professional manner.
I've dealt with professional photographers who have done this sort of thing before. Generally they will want to meet up some time beforehand to get a look at you and discuss what you want, what you'll be wearing, where and how you'd like it shot. This'll often be in the form of going for coffee or lunch.
The main reason big modelling/acting photographers will do this is because they want to make sure you get exactly what you want if you're dropping like $500+ on photos and plan on using them to represent yourself for your career. Cosplayers might just not care as much about the quality to begin with. I personally think though that if they're just trying to improve the quality of their service and give you a rundown of how they work, it's fine. I can see how it might feel weird if the photog is a young single guy 'asking out' young single women, though. Make a judgement call on that, maybe hire someone older and more experienced if possible to begin with.