Thanks for all your replies guys.
I usually wear contact lenses, but one of my eyes was watering, so I wore my specs for a couple of days.
The reason I asked about what influence this had on customers was that I wondered if any may have thought that the rain on the lenses would affect your ability to see well enough to do a quality job. (I know, keep wiping them dry!)
In my neck of the woods a cloud in the distance is enough to bring out the oh too familiar 'not today thank you', let alone rain on my specs!
I'm not a great fan of baseball caps, but like the idea of a cowboy hat.
John