Well for us we always supply all of the supplies needed. Some of the ladies have allergies to latex or a preference on condoms so typically we supply. Its also for safety reasons.
If you have a particular condom you want to use please make sure you let us know in advance so we can let the lady know and get her approval. If it is ok with her we ask that you bring a new unopened box of your choice of condoms. Obviously you are free to take any leftovers with you,
Once again respecting the ladies preference always takes priority for us.