Deadeye as good as ultravision
 

So from what I can tell of having deadeye as an SK its like its daytime again, not sure if infravision was THAT good, but its pretty approximate to having daytime vision at night or ultravision. cause when an enchanter casted UV on the group I didn't notice anything different between the 2.

Yeah that sounds correct. Infravision makes everything red tinted.