Depends what you mean by "Road Bike" - and how strong you are
One like this will give a comfortable ride, and have gearing (probably!) similar to your hybrid but should be a bit faster. It won't necessarily be quite the same as putting drop bars on the hybrid.
http://dawescycles.com/product/galaxy/ is but one example
Whereas one like this will be of the "twitchy" type, be much lighter, won't have racks/mudguards etc., will have higher gearing so will be harder to pedal up hills (and you may not find it easy with some makes to lower the gearing) and will be quicker than the hybrid or tourer - if you can turn the pedals.
http://dawescycles.com/product/giro-600/ is but one example of many - since this type of bike is the trendy one at the moment (Bike shops have tried to sell me similar bikes when I was looking for a tourer earlier this year)
To put it another way, on my tourer once I reach 25+ mph (downhill!) my feet are spinning around quite fast in the highest gear, whereas I often follow road bikes doing 30mph (I'm in the car of course!) and the riders feet are hardly moving!
To get an idea of what I mean, look at the chainring and sprocket sizes on your Hybrid, compare them with those on a typical tourer and a typical road bike, and study the gear tables available from this link to understand gearing and what the 3 bikes may feel like in comparison to each other
http://www.ctc.org.uk/cyclists-library/components/transmission-gears
To put it another way, on my bike I have 2 rear sprockets that are bigger than my smallest chainwheel (=easier to pedal), a typical road bikes biggest rear sprocket will be quite a bit smaller than the smallest chainwheel (=harder to pedal)