Off the top of my head, I have seen the double legend on several grips. To do a proper Trawl would require me to check them. I’ll try and do that tomorrow. The reason for the double legend was to rapidly check the position of the button, with the stick back, you would not easily assimilate the button position unless you had the legend either side of the knurling. I am pretty sure I have typhoon and tempest buttons with single and double legends.