That’s disappointing if Sire leave the side dots in the central position. I have a Spectorcore which has them at the “line” position. It definitely helps as you do need to finger the note on the “ line”. However your ear will become accustomed to listening for the note and looking for it.
as to how often do I use it, it goes in spurts, sometimes it’s all I use, other times it sits unused for weeks. I do find you can use fretless on songs you wouldn’t associate with fretless, just avoid slides and finger the note as accurately as possible then lift off cleanly, then just sounds like bass.