Just did ambush. I'll get to evis tomorrow.
No buffs and speced Subterfuge. Only 60 ambushes, sorry once again for the smallish sample. Keep in mind that I lose the 25% damage while stealthed from Nightstalker due to being Subterfuge.
Gear:
Shadowcraft helm
WSG neck
shadowcraft shoulders
bandit cloak with stealth enchant
tunic of westfall with 4 stats
black wolf bracers with 9 stam enchant
foreman's gloves with 15 agi enchant
bandit belt
cobrahn's boots with minor speed enchant
signet of argas x2
pvp trinket
agm
Offhand weapons were Mass of McGowans with either 15 agi or weapon chain once again.
Shadowfang with agi:
Shadowfang with weapon chain:
Scarlet Kris with agi:
Scarlet Kris with weapon chain:
Here's what we ended up with:
K=Scarlet Kris,
S=Shadowfang,
W=Weapon Chain, and
A=Agility
HIT
average max min
k-a 246 261 231
k-w 238 252 223
s-a 228 242 209
s-w 217 233 200
CRIT
average max min
k-a 489 522 463
k-w 480 504 447
s-a 455 483 420
s-w 438 465 400
There's a noticeable difference in favor of agility over weapon chain, but no more than a 20 damage difference at most. Kris obviously outperformed Shadowfang as well with upwards of a 40+ damage difference between identically enchanted weapons. Nothing game breaking, but perhaps enough to make it worth swapping on for openers.
TL;DR for maximum damage on your ambushes use Scarlet Kris main hand with +15 agi. (with your +15 agi Shadowfang OH ideally)
Evis will come tomorrow and hopefully I'll be able to squeeze in Slice and Dice as well.