First off, the game should include the whole party for conversations and the companion best suited should roll the check. It should not be a solo gig.
This ^ a million times over.
Every group has someone in it who is the most persuasive or most charismatic person. As the only person behind a multiple character group we should at the very least be given the option to "choose" which of our group members is asking the questions at any given time.
This is a horrid oversight by Larian.