Tested it for a month and had tons of fun with it.
PROS:
Bought it pretty much only for a damage multiplier option and it didn't disappoint me. What a great feature.
Wallhack works as intended and is surprisingly helpful both in PvE and Index.
CONS:
Basically none. Although it's a shame damage multiplier only works for weapons and exalted weapons, no skill damage bonus sadly but it's still fine.