On, MM, but we are: not to effect salvation, justification, and initial sanctification as new-born in and by the gracious Spirit; but we are regarding subsequent progressive sanctification, measured in observed and real felt spiritual maturation, finally summed up by the Lord's valuation of one's works at the Bema Seat of The Christ (2 Cor. 5:6-11).
The problem with Pope's analysis here is that according to the (false) RC view, all professors will undergo that judgment; whereas, in fact, the only humans evaluated there will be those who have been reborn in the Spirit by grace through faith, having already the experiential confession of possessing God's gift of salvation. Anyone who cannot satisfy this requirement will still be left on the earth to suffer God's great wrath, or be still in their graves until the Great White Throne judgment.
You are correct and I should have qualified it as not needed for salvation.
And while holy living is sanctification in progress, lack thereof does NOT cause us to lose our salvation either.