Ok people, either they've fucked up really bad in the steam update or GabeN is trolling to the max.
It seems now the default HD pack is forced to be installed on your half-life game and overrides all the models you may have installed on your folder. I've tried to delete the High-Definiton Pack GCF to see if that would help. Only to discover it tries to install again if you try to relaunch Half-Life.
This Means you cannot view anymore custom SD model packs installed in your directory folders. Which means you won't be able to see the models from my pack ingame. Kind of a middle finger to the face to all of us gamers if this is indeed mandatory instead of the free modeling community that made Half-Life as great as it is.
Time to take this up with STEAM.