Non-Issue. You will be fine.
Also, when traveling, I tend to wear long sleeves. NOT because of reps, which it would hide, but consider the following;
If you are sporting serious bling, it will make you less of a target of would be petty-crime or mugging.*
I really don't want my bare skin touching a.) the guy next to me on the plane, b.) grimey arm rests for 4+ hours.
A long sleeve button down or sweater can be more fashionable / professional. If you look like a mature traveler or business guy, less issues
Again, you will not have an issue... *And America is actually safer from "petty-theft/crime" than say the pickpockets in Pigalle.