I have it, Ionic gave me it on a disc when i bought a pro 2 system a few years ago. It is ionics trademark, and I've heard of people being forced to remove it from vans etc when ionics find out they're using it without owning a system from them.
I use it on my business cards at present, and when I eventually get a website and my van sign written, I will use it there as well.
To us window cleaners it may look dated now, as we have been seeing it for years, but custies who've had my business card do recognise the logo and say "ah youve got a reach and wash thing" especially commercial ones
love it or hate it, people do recognise it IMO