fwiw Dermott-Carrick were the clear 2nd pair last game....and thrived.
5v5
Gardiner 20:43 (50.0cf%)
Hainsey 19:21 (51.9cf%)
Dermott 16:00 (65.4cf%)
Carrick 15:45 (66.7cf%)
Polak 14:07 (54.6cf%)
Borgman 13:43 (48.5cf%)
and I don't think it was against particularly soft usage, either.
Dermott vs Dzingel 3:21 - Brassard 3:07 - Stone 3:37
Dermott vs Hoffman 5:55 - Duchene 5:52 - Ryan 4:07
Dermott vs Pyatt 6:21 - Smith 6:09 - White 5:25
Dermott vs Burrows 1:52 - Chlapik 1:22 - Dumont 0:43
Polak vs Dzingel 6:27 - Brassard 3:43 - Stone 3:24
Polak vs Hoffman 2:31 - Duchene 3:30 - Ryan 3:46
Polak vs Pyatt 3:43 - Smith 4:10 - White 1:22
Polak vs Burrows 2:54 - Chlapik 3:37 - Dumont 3:13
Yeah it looks like the Borgman-Polak Pair were given the sheltered bottom pair usage for sure.