Yes, I do not believe there is any middle ground on the subject.
According to Colossians 3:3, it would be IMPOSSIBLE to lose your salvation. We ARE DEAD (present tense, not future and spiritually speaking), and our LIFE IS HID (present tense, not future) WITH CHRIST IN GOD. In order to lose it, satan would have to snatch us from God, impossible. Or we would have to un-die in order to have our own life back to lose. Impossible.