So I went to the C-Store and got myself the Formal pack and the two extra Costume slots thinking how much fun roleplay I will have with my new hootchie mama cloths. I get to the tailor and I can only put Uniforms into my brand new Costume slots!!
Kinda feel ripped off at the moment, I hope the Costume slots that I have paid for will some day be for Off Duty and Uniforms. Or at least the C-Store listing updated to inform players that they can only use these extra slots for uniforms
technically, there is a work around for that, when you buy the new slot, enter the tailor screen and then skip all the settings and purchase the default uniform (without changing any settings) the next time you modify the uniform, off-duty options will be available, the catch is that you can only do this once per slot, and you can't make any changes to the outfit after you purchase it. Oh, and you have to waste the slot's free costume change in the first step, so it will cost you some EC.
I do hope they add full Off duty options to the extra costume slots though, this works but it is a pain in the butt.