What a lot of toffee.To start with a squeegie doesn't leave smears either so where is the advantage of this.You would still need ladders to access windows.
As for internals several methods have already been devised. Qvc like this sort of thing but you have to price it high and get people to ring in with the same demented determination they show for tormenting simon cowell with the x factor twins.
In branding terms this could be a disaster , the poster boy for trad window cleaning with the fastest arm in the country
going modern is a mixed message.