vampire the masquerade 5e – Consequences of allowing more than one Knowledge Sheet

I understand that the intention of the main rules is that each PC has one and only one information sheet.

What are the consequences of allowing a player to access more than one story sheet? The things that worry me are:

  • Are the advantages of the knowledge sheet unbalanced so that allowing a player access to more than one sheet will obtain a significant advantage?
  • Are the advantages of the story sheet prone to grabbing the lime light, so that by allowing a player to access more than one sheet, he will receive a lot of attention in the game?

The best answer would be based on practical experience, but since this is a new game, I am also happy to accept an answer based on the analysis of the rules.