The Real Strings in Ty5 have the same voice nos. as the Genos "Seattle" strings which usually means the voice samples are the same. The first thing I noticed was that on Genos they are less harsh and more responsive to tweaking than on Ty5 which might be something to do with the Genos sound engine. They can be used by themselves but when layered with Kino strings suitably tweaked the combinations can provide fantastic realism, from Strauss Waltzes, to orchestral light music, to symphony type orchestras when played full keyboard.
I doubt whether the Kinos are a "convertible option" for Tyros5 for anyone other than Yamaha (presumably via packs assuming they are somehow motivated to go that route.)
John