good advice from serge here.
as long as you avoid handbanging, they can sound sublime. I heard these on end of a 66 and my quad 405-2 and it was a lovely match with acoustic, vocal led and generally more cultured music. But if you listen to a lot of rock, maybe not the best choice. In many ways they possess some of the strengths and weaknesses found with bbc licensed speakers.
and if its to scratch an itch then just make sure they work as intended and sound nice as is. If you get them for a good price you can just sell them on if you change your mind.