I agree, but why the continual slagging of of trad by wfper's, horses for courses and all that. Round here 80% of custys wont have wfp, that is why I cant switch.
That sounds like they have a very cavalier attitude to another human being's safety. I wonder how they would drive if you got in a car with them.
Seriously though, I would be very surprised if it was 80% if you just went ahead anyway. I think much depends on how it's presented. I suppose that if you were to sound out your customers and ask them if they wanted what they currently have or if they wanted their windows left wet then it might even be more than 80%. When I switched, on the previous visit I left a pre-printed note with their bills informing them that the switch would be happening soon, of the advantages of WFP (including my safety), and that if there were any imperfections after the first clean, they would rapidly be resolved on the second clean. Unfortunately it is the case that with some types of jobs, it can take a clean (occasionally two) to discover the weak links so that you can put them right.
There was something like a 5% turnaround of customers in the first few months of WFP whereas it had been totally settled before that. Some I lost. Some I gave up on. It was a price worth paying though.