Yes, my maple brüko has good sustain too, especially with lightweight strings. Personally I think too much sustain just isn't 'ukulele', but each to her or his own. I'm a proud pedant.
Fretboard is too short! Unlike Concerts/Tenors, they end where the neck joins the body... doesn't go all the way up to the sound hole, unlike concerts/tenors.
This was pointed out to me in another thread.