I've been playing with scrolls in my red death build, but it doesn't run confidants on the other hand, having tombstalker instead. (which is something I have debated heavily in my head, confidant vs stalker, but stalker just wins me games)
bob + scroll might not be so great, but Pikula also ran them both on deadguy ale debut. it's going to be a lot more situational in that case
black knight for me is kinda meh, but not bad. In my RL deck I play rakdos guildmage (yes, that one) in his place. it allows for some nifty combat tricks, kills weenies all day long, and can even "pump" himself in damage races. not a lot of swords around here to warrant pro white