Quote Originally Posted by Estellios View Post
Caravans are the only company restricted content. Quests and guildleves you get a bonus for doing with people of different companies.
I'm not sure I ever saw either way if they were restricting Grand Company Leves to allegiance only or not yet.

The only real known information are:

-They are on a seperate counter than normal Guildleves, which also stacks to 99 just like the Guildleve tickets.
-They (can) reward Grand Company Seals


However, if they act like normal Guildleves sharing, they probably aren't restricted to Company only.