'''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Current Shimano road brifters (5700, 6700, etc.) pull more brake cable than their predecessors so it's not surprising they work adequately with V-brakes. Shimano changed their newest model road calipers to match the new cable pull.
You will need a travel agent to change the pull ratio of the lever if you are going to use v-b with a regular road lever.
If you dont use it, you wont get any power trying to stop. But is your call if you want to use a combination like that w/o travel agents.
The other way around. There's plenty of power, if you can get the brakes to pinch before the levers bottom out before the levers hit the bar. For the front it' usually not an issue to run regular levers and v-brakes. For the rear getting both clearance with brakes idle and good braking w/o levers bottoming out can be an issue.