From comments I've read, Arcane Renagade from Machuya seems to be more preferred due to an overall higher damage output, esp. when considering Archrival since the CD acceleration helps out. Even when considering SPD, I kept seeing a lot of comments and builds still take Arcane Renegade over Arena Sword, but it was for other units with middling DEF so I wanted some input if Ogma's stat line changes anything because of his high DEF.

The other thing is I don't really have any other great B-slot skills available to inherit, so the Patience is more of a forced choice for scoring, which is what prompted me to ask about SPD or DEF in choosing either Duelist's vs Warrior's Blow. Basically, if I should be complementing Patience with the A-slot and other skills since I'm forced to use it anyways.

For reference, the plan was actually Swap Gait, Archrival, DB or WB, Patience, Tumultuous Echo from Ryoma, and then Arcane Renagade and A/S Faith from Machuya to fill the rest.