William Young,
I need to try this again, because while arranging a character sheet for GURPS I realized I had to do a lot of editing (copy/pasting from PDF books isn't keeping the format very much, and unfortunately this happens for small/simple NPC stats as well), and I must make difficult choices on what to add and what to discard because it seems difficult to me to enter all the required information for a full-character sheet.
The current way character sheets seem to work in Roll20 looks to me like a character sheet helper : I mean, you can have there a portrait and the "fluff" aspects of the character (bio and such) along with the most often (or most likely) used "atributes" and "abilities" and their corresponding macros, but not all of them.
So, I still use a link inside the Roll20 character sheet for displaying the full PDF character sheet in another Chrome tab.