After some googling, I still could not find a reasonable, form-fillable PDF character sheet for the game. (I.e. a PDF character sheet where you can type in all the data). Quite possibly, it is me being Weak At Google, but anyway, I took the effort, and did a version, based on the character sheet available at atlas-games.com.
So, if anybody needs it: please, feel free to download an use! <Damnation, as newly registered user, I cannot post a link here. Anyway, I will try and post is soon!>
Any feedback, comments, error lists, suggestions would be very-very welcome!
I have spent many, many, many quiet moments at work to build a set of Excel spreadsheets (somehow based on that one Bob linked) that may be of some use (four of them, for magi, companions, grogs and covenants); it's main advantage, besides all number crunching and automated calculations, is that XPs and so are stored in tables by year, so you can advance your magus (or covenant, or companion...) or plan advancements, and then set the current year and get the character sheet for that year. It's quite useful for NPCs: you spent some more time designing them but then you can pop them years later with their numbers updated just by changing the current year value and printing a PDF file.
I could share them, if only I remember the password of my site...