Packing HL2 textures

[The_Gl!tch.exe]

Hello there,
I'm creating a TF2 map using the citadel textures from HL2 (those pre-installed in TF2).
Should I pack all texture-vpk files or do I have to extract them?
Is it neccessary they should be packed?

 

[Startacker!]

TF2 comes with all of HL2's world textures, so there's no need to pack them. You can find all the HL2 assets TF2 comes with in the hl2 folder in Team Fortress 2.