So could you work if there was a member of the opposite sex sitting across from you naked 
Oh yes.
I used to be a rep for Allied breweries (got made redundant) and one of my calls was on a naturist club in Hampshire. I got used to doing business with the steward and his wife who were both always naked. I have to admit that she was quite a "looker" but after a couple of visits I accepted that she would serve me a drink and then sit opposite me, me in a suit, giving me their order whilst wearing nothing at all. Her husband would wander in and out starkers too. Often club members would wander in from the tennis courts equally unclad. Ages ranged from kids to OAPs. The OAPs could be a bit
making
On one occasion the Area Sales Director was with me, as sales directors do he used to spend a day a month with a rep, and he asked if we could visit the club he had only heard about. I took him there and when I announced myself at the intercom on the gates I took off my tie and started to unbutton my shirt ~ he looked nervous but I assured him it was how I kept their account ~ by being one of the "crowd"
I had the silly bastard down to his underpants before I couldn't stop myself from laughing and gave the game away. He cursed me roundly and got dressed again (In a Ford Escort not easy).
We then drove in and went to the club house where the steward and his wife, naked as usual, were p*ssing themselves laughing having watched the whole performance on the camera that watched over the gate.
I have long suspected that was why 6 months later I was one of those who was made redundant ~ Or perhaps I shouldn't have retold the story at the Company Christmas Dinner
