maybe i am a bit cynical , but i think it will never work in a month of sundays, i have tried to get a few jobs swapped with local windows and i just waste my breath, If i have stuff outside my catchment area i either refuse it or pass it on with no strings attatched.
Maybe i am wrong , but i have never had a job swapped and only one other window cleaner has ever passed work on to me, I think we are a selfish lot if we get work we tend to be very attatched to it and will keep it forever.
dave