Probably? It just kinda depends. We're trying to work out the Weiss situation but figuring out Schwarz is... trickier. Battlemage seems to have a slightly better chance for unorthodox (read: not Sword) weapons, so marry Felenne I guess and hope for the best.
EDIT: Also it should probably go without saying, but pick 2x Knuckles for Weiss and try not to pick too many Swords.
Can Schwarz use knuckles? Yes he can i have Firine @ 4 and he could carry Knuckles Which i have scythe Vice(Wiess) Now i have to start doing the character creation now i've been procrastinating.in actually doing the requested combos.