I put Amos in the same category as Kwiatoski. If they've reached their ceiling, both are good journeyman backups. However, Amos improved dramatically this season. he went from being awful to being serviceable. So the question becomes whether he continues to improve. If he improves 50% of how much he improved this season, he's clearly a legitimate starter.
Amos a journeyman backup? I don't think so. He was ranked as the #2 SS behind only Harrison Smith. The following is through week 9. I couldn't find anything more recent, but the PFF guy (his name escapes me at the moment) was on with Spiegel and Parkins yesterday and Amos is still number 2. And that, my friend, is way more than being "serviceable."
2. ADRIAN AMOS, CHICAGO BEARS
PFF Grade: 92.0
PFF Elite Stat: Amos is allowing only 0.21 yards per coverage snap, the 11th-best mark among safeties with at least 100 coverage snaps.
Amos leads all NFL safeties with a coverage grade of 91.4 this season. Despite being one of the most frequently targeted safeties in the league at once every 11.5 coverage snaps on average, Amos has surrendered a first down or touchdown on just 27.8 percent of his targets. That’s the sixth-lowest mark among safeties with at least 10 targets. He’s allowed just 41 yards on 13 catches in coverage this season, with a mere 19 of those coming after the catch. His 17 solo stops are the sixth-most in the NFL this year among all safeties.