Yeah without HP Ice Landorus-T and Gliscor wall you (SD can beat Gliscor but its tricky) its definitely worth a mention.
I feel like LO SD and LO HP Ice are the vest sets this gen with choice scarf being an option for pure revenge killing but Aegislash is a huge hurdle for choice sets as locking yourself into earthquake is easily abused and it cares very little about your stabs.
If it's a Swords Dance set, +1 Stone Edge and +2 Stone Edge deal more damage to Lando-T and Gliscor, respectively, than HP Ice coming from an uninvested Special Attack. Even invested, it will never OHKO a standard Lando-T or Gliscor.
252+ SpA Terrakion Hidden Power Ice vs. 252 HP / 4 SpD Landorus-T: 236-280 (61.7 - 73.2%) -- guaranteed 2HKO after Leftovers recovery
(236, 240, 240, 244, 248, 252, 252, 256, 260, 260, 264, 268, 268, 272, 276, 280)
252+ SpA Terrakion Hidden Power Ice vs. 252 HP / 0 SpD Gliscor: 248-296 (70 - 83.6%) -- guaranteed 2HKO after Poison Heal
(248, 252, 256, 260, 260, 264, 268, 272, 272, 276, 280, 284, 284, 288, 292, 296)
I think you're better off having teammates that can deal with those two.