I think that's because you're probably going to have a different DM for most of your quests, and the campaign-like series quests will swap out characters a lot who can't/don't want to come back to the quest or attend every session. So it's always a new face in terms of both player and DM - hard to get 'familiar' with the player and what they're all about on short notice, likewise adapt to changing DM styles and a changing party all the time.
I don't actually play PnP, though. I was just referring to why it's probably better that way if you want that single character through the long campaign thing. While some people don't like characters familiar with the DM going on their quests, I prefer it, so that whoever is running the quest will understand her motivations and have a lot of experience with her strengths/weaknesses.
You know what I mean though, it's the difference between rolling a crazy lore and being told obscure facts about the history of pottery, or the DM knowing that your character knows absolutely nothing about pottery despite the lore score and giving her something in her field, instead, or just plain telling her that she came up blank. It sounds like a small thing but it adds a lot!
It's particularly noticeable in 'deepest fear' or 'heart's desire' or 'sees into your thoughts' moments in quests, hehe.
Other than that, I don't know if I would even take to a PnP session very well... never actually done it. Gasp, shock, oo, aah.
