I am now at level 17 and have 9 proficiencies. I expect to get another at level 18 making 10 in the whole game.
That's 6 to start with, then 1 more at each of the following levels: 9, 12, 15, 18.
I am a kensai with four in katana, three in dual-wield (thanks for the hint!), and two in longsword. My dilemma is now to choose where to put that last proficiency. I think I shall go with katana so I can have the satisfaction of being a grandmaster. I most often use celestial fury, but I also like Daystar and Equalizer. Flametongue is useful against trolls. What swords/proficiencies do others like?
"Not to know me argues yourselves unknown."