A SV650 I bought several years ago came with Clubman bars:
http://www.airtech-streamlining.com/...andlebars.html
It's the cheapest and easiest way to get clip-on position (although non adjustable) on a bike rigged for regular handlebar.
Otherwise you could buy a Daytona 675 top triple clamp and a set of clip ons of your choice.
It should not be too much trouble to implement the mod.
It is generally easier to retrofit clip-ons to a bike equiped with regular handlebars than the other way around (cable lenght/hydraulic lines might be a tad short).
Spiegler USA imports the LSL kits for people going the other way around (clip ons to handlebar).
They're cool because they include the lines/cables if needed:
http://www.spieglerusa.com/cfm/sbk.cfm
Flipping regular bars does not really work as it results in a pretty awkward position most of the time (and sometimes the bars might interfere with the top triple anyways).