NOIt's not QUITE that simple. They can and will, but the set up has to be incredibly finely judged and the wheels uber-straight to allow very fine rim to pad clearances. My Carrera drop barred MTB runs cable discs (the same pull ratio as Vs) with drop bar levers quite happily.
roadlevers pull less cable with more force so you would need a cable pull converter.
The big caveat is one really needs to be skilled in setting up bikes and brakes to make it work. Unless you are sheet hot in this regard, and willing to keep it finely fettled then it's not recommended.
Those canties look like an easy way out THM. New cable, hangers and straddle cables and you should be on your way.
No, the above should be avoided as a road lever has les pull and no matter how you set anything up, the lever will go straight to the bars. Braking will be snatchy and horrible.
Best just use dedicated V road levers and bar-end shifters or STi with mini V or a proper 'device' - these do work quite well when set up properly
*edit: general information for every body!
Incorrect. Mine bite fully at about 1/3 of their travel. I'm not a million miles from you LGF and if you want to meet up for a blast round the forest you're welcome to try it yourself.
It can be done with skill, but it's not recommended unless you're an above average bike tech. Considering the grief that many people have simply setting up cantis, the world's simplest brake, it's not something that Joe Everyman should consider.