I converted my sirrus from flat bar to drop bar. Really, I should have bought a road bike, but there was "political" considerations.
I do recommend the barcon approach, although I went with brifters.
Keep in mind that normal road bike brakes are not meant for cantilever or V-brake systems, and you will need a special take-up system, mounted at the brake, to make them compatible.
Also, you may need a new front derailleur even if you go with barcons. Also, you'll have to fine-tune the stem angle and length, since the drop bars will change your hand position with respect to the rest of the bike.