I have played this a few times – it is hard on a modern concert grand because the knee block gets in the way, but on a smaller harp (as they were at the time) works quite well. What works on a modern harp is to have three players – one seated playing the inner lines and doing the pedals, then one player for the top line and another for the bottom. Makes a mildly entertaining novelty show piece.
How better to show off two marriagable daughters at the same time?