According to the safehouse duelist should work like this:
59 - DuelistDuration: 12 seconds
Reuse time from 30 (L59) to 29 (L60) minutes
Multiplies all base damage attacks by 4When using this discipline, all hits landed by the rogue will be for at least four times the base weapons damage. Backstab damage is doubled. This discipline lasts for 12 seconds, and has a base reuse time of 30 minutes. The reuse time for this discipline will decrease as the rogue gains additional levels.
pulled from
http://www.thesafehouse.org/forums/s...ead.php?t=2870
Right now I dont believe duelist is acting anything like this. Id like to open the test server and have a gm buff a rogue so duelist in its current form lasts like 30 minutes to get a good pars and see how its wrong.