Lanefan
Victoria Rules
I wouldn't, in that you're in theory playing your character rather than yourself; and if you want your character to be outspoken in the fiction then bloody well speak up in-character at the table.In my experience, if this happens it’s because certain players are generally more active and willing to jump in than others and it happens no matter who/what their PCs are. In these cases, I’d reward the player with a beer or something.
So ultimately I’d excise using in-game mechanics to encourage/discourage out of game or personality-based dynamics.
As for rewarding the player with a beer - well, at least it's a meta-level reward for meta-level actions; but it doesn't answer the reward-amount vs in-character-action disparity, which is my bigger concern.
I mean, I'd love it if the DM gave me beers all the time but AFAIC it's my character doing stuff, not me, and thus it's the character who should get the reward (which, in most cases, is xp).