Just put these on my guitar. Usually I put on Knobloch (double silver or pure silver) basses and Savarez 500 trebles, throw away the Savarez basses (Knobloch better) and the Knobloch trebles (Savarez better).
At the very least, Savarez 510-CJH will save me money. No waste (trebles and basses are both excellent). The 510 trebles feel a bit thicker than the 500, so I'm having to work them a little more, but actually, if you push them they're excellent. Are the Savarez basses better than the Knobloch? Photo finish. But the Savarez are cheaper than the Knobloch AND there's no wastage.
I put the normal tension 510 on my other guitar. Very similar impressions.