NO STEP
Looking at HOT featured in your pics Ned, it occurred to me that you could confuse the callsign for a label, let's face H500s are hot! Or maybe they should have painted it on the fuselage at the back neat the exhaust?
Reminds me of the H500 I saw at Gladstone one year. It had the word 'pilot' painted above the left hand door. I thought 'surely the guy knows which side to fly it from'? Then I realised the aircraft was for ferrying ships pilots out to the bulk carriers in the channel. Der!
My all time favorite bit of lettering though is the label on a French registered chopper F-HEAD it says.