What shifters? You need to match road shifters and MTB shifters to their corresponding front derailleurs.
Surly sells the bike with Shimano Deore FD-M616, 28.6mm. Top-pull front derailleur. They say 28.6mm, top-pull or Shimano high direct mount. Says it comes with the adapter, presumably for the direct mount.
I assume any 28.6mm top pull FD, matched for the shifters and the tooth count of your crank will work.