i made quick test especialy for Eclair ;]
attacker player : 23% crit chance, +20 crtit roll, x2 brd fire regular AV
burst
player (with Evader): 237dmg, 294dmg, 245dmg, 293dmg, 333dmg
player (no Evader) : 263dmg, 291dmg, 288dmg, 318dmg, 309dmg
76DR - standard stuff etc.
propably working but in av dmg is so wide/random than you will see difrence when you have over 400hp 85+DR and make test how often you can get two 1hex and still standing on feat with evader and without it.