I'm pretty intrigued by 9 strings. I'm yet to play a proper 8 but I've tuned down that low before and liked it. I think if I was to play a 9 string I'd end up playing some touchstyle and regular playing on it so I'd really need the instrument to be up for both kinds of playing.
I think the main reason more people don't plumb for these is because you have to go custom which is really expensive and almost everyone getting one won't have played more than 8 before so it's an expensive trial really and there is a good chance you won't like it. This won't really change though unless they become very popular which is unlikely.
I think the main reason more people don't plumb for these is because you have to go custom which is really expensive and almost everyone getting one won't have played more than 8 before so it's an expensive trial really and there is a good chance you won't like it. This won't really change though unless they become very popular which is unlikely.