Well, if it works for you then it works for you. Far be it from me to tell you not to.
I will say that I have never seen a trained harpist do it, and I can’t really imagine trying to do it that way. I find it not difficult at all to read and play with the music on the left, and if you position your music stand in the right spot and have proper positioning at the harp you don’t need to do any real dramatic twisting of the neck to look back and forth. Besides, eventually with enough practice you don’t need to look at the strings nearly as often as when you are just starting out.
Turning the pages is one of the reasons the stand is on the left. Also for many people looking through vibrating strings to try to read the notes is distracting to say the least.
If you are playing for your own enjoyment then do what ever works for you. I think you should be aware of when you are departing from the tried and true methods, but that doesn’t mean you shouldn’t depart. Just understand that you are.
Also remember that if you ever decide to take lessons in the future your teacher most likely will insist that
I heard from friends that the great Welsh harpist, Osian Ellis, used to read through the strings, when sightreading in the Orchestra (he was principal harpist with the London Symphony Orchestra). I don’t know if it’s an apocryphal story though! Good Luck Michael! 😉
For me and for the other musicians I work with the added weight and the worry of potentially damaging an expensive piece of electronics, plus the hassle of getting music into the darn thing all the time far outweigh the minor difficulties of regular sheet music, especially when you consider that for most instruments an entire evening’s worth of music makes a pretty slim folder, when you only have a single line.
Now that I’ve seen the device you were referring to – I agree – $1500 is too much for a dedicated unit of this type, that could easily be dropped or damaged, and achieve basically the status of an expensive paperweight (except for being less useful).