I don't think they would leave the armour, personally. I wouldn't leave the armour, were I them, to someone I neither liked or trusted.
Extermination supports the idea of Terminator and Breacher Squads being operated in unison- There's both Iron Warriors and Imperial Fists mentioned having them, and boarding with them. I'd say the idea of there being none is pretty preposterous; if you're boarding an Astartes cruiser that likely has Dreadnoughts, vehicles and Terminators, then you're going to be way outgunned. I'd say it's pretty standardised, at the time of the Heresy and amongst the Traitors, to have mixed Companies.
Nyctophobia- Fear of the Dark Angel.
"No one ever spoke about of those two absent brothers. Their separate tragedies had seemed like aberrations. Had they, in fact, been warnings that no one had heeded?"
'Killing a man is like fucking, boy, only instead of giving life you take it. You experience the ecstasy of penetration as your warhead enters the enemy's belly and the shaft follows. You see the whites of his eyes roll inside the sockets of his helmet. You feel his knees give way beneath him and the weight of his faltering flesh draw down the point of your spear. Are you picturing this?'
'Is your dick hard yet?'
''What? You've got your spear in a man's guts and your dog isn't stiff? What are you, a woman?'