I saw it mentioned on the gb forums but not so much how it went in use.
Even though Rough Rider gives damage resistance, it increases your max health. Attackers always receive equal damage that they deal to you with a Rebounding Warder mod boosting Recompense to 100% (or 110%).
I'm levelling up a Siren for Fleet, but Recompense could be interesting, too. --- It's raining luggage and babies and limbs and Daddy doesn't come home.
I'm not a Maya savant or anything so I can't say much about that one, but I've seen that Rough Rider be used for her Motion tree I believe it might be the "Fleet" skill as you mentioned. --- XBL GT/PSN: Tsuruke.
So you'd have to get your health bar emptied 10x to kill a single low tier enemy. It's a good idea if the amount of damage returned was multiplied. --- Oh, you thought they made this game for you? You clearly bought the wrong game.