At least I think it is. It doesn’t have a longer duration like the rest of my boons do. I’m specced into elixirs on my Engineer and I was playing tonight after finishing a post about my build. It dawned on me that Vigor is the only boon that doesn’t last 15% longer with my 2 Superior Runes of Water on my armor. All of the other boons are affected by this bonus but Vigor doesn’t seem to be it’s still at 5 sec.
The boon I’m talking about comes from the trait Invigorating Speed
Balance Team: Please Fix Mine Toolbelt Positioning!