I switched to exposed cores recently, I had to raise 3/4 saddles. Like Michael says, where the string goes over the bridge, there are no windings, most strings do have windings over this area, so you need to compensate for the missing wind thickness, unless you really like fretboard and fret clack...
YMMV, but I was able to simply raise the saddles, no need to reset the intonation, but you'll want to check it anyways.
I think you'll be pleasantly pleased with the result as well.