Do not worry you will eventually progress onto the Ducati
Anyway having owned an CBR600-FX (my first bike after passing my test) I will say that it is an absolutely fantastic bike. It is very capable once you gain experience and can be very ballistic in the right hands.
However my wife had an SV-650S and I would choose that every day over a CBR-600.
As said before the combination of V-twin power and the handling of the thing makes it a perfect learners bike as you will not be scared, but once you get more confident it can be chucked around the road with great abandon.
I took my wife's SV across to the Isle Of Man (IOM) in preference to my Ducati 748. In bumpy conditions and tight bends it kept up with R1's, Fireblades etc as you were so confident in opening up the throttle mid corner and knew that the bike would not spit you out the far side with the fear of god.
The SV holds fond memories as it is the 1st bike that I have had that I touched down my toe sliders and also the only bike where I have touched down the body work in the corners.
If you do go for the SV then I would recommend the S over the non faired version. It has a slightly higher gearing for a bit more top speed but the fairing keeps the wind blast off your chest. We fitted a bubble screen to lift the wind blast even further. You can also get a full fairing added if you wish but we ended up getting a belly pan to keep the crud of the oil cooler.
Happy hunting. If you want I can get you details of a good school to learn with as it makes all the difference.
Cheers
DMW