WFP is a lot faster than trad, FACT.
Maybe not on a specific window, or even a specific house, but over the course of a week or month you WILL get more work done with WFP.
That, along with the safety aspect, makes WFP a no brainer.
Agreed, the recent cold weather has been a pain ( no pun intended ) but using a ladder in an icy garden isn't wise either, and the amount of times I put water onto a shop window only to see it freeze before I managed to squeegy it off is unreal.
BUT, over the course of a working year I can see no way possible that trad can even begin to compete with WFP. I've just picked up a contract cleaning two four story office blocks - 405 windows, in and out - I wouldn't have been able to even consider a large, well paying job like that if I were restricted to working from a ladder.
So, all you trad cleaners who think WFP is too much hassle, too expensive, not as quick as we reckon it is, etc, etc, just imagine the doors that would open to you simply because you operate a WFP system.
I would go so far as to say that if you a serious window cleaning business intending to expand and become a "serious player" you NEED WFP; FACT!!