Chronomancer/Dueling/X
For PvP yes , you can go for Chrono/duel/Domi for a good mantra/powrer lock Mesmer . It has great burst like thief but low sustain and condition clense.
For pve its not a good combo imo
if you want a good pve build with chrono and dueling you can also use domination use all zerker gear and the leggs are comanders runes of leadership and you can do some realy good damage if you use swords and a shield focuse for backup
Condimesmer uses dueling in its raid meta build. Realise though that your chances of rading in that build are near 0 unless you already have a raid and they are willing to let you use the build.
As other mentioned, in Spvp different stuff works. As far as engame pve (fractals and raids). Domi and Illusions outperform Dueling but I guess you could run a Domi+Dueling or Illusion+Dueling suboptimal build.
You could probably beat frac with Chrono/Duel/Insp.
You miss out of Blurred inscriptions tho.
“I control time and space; you can’t break free.~”
“Maybe I was the illusion all along!”
“Maybe I was the illusion all along!”