Actually no. You can upgrade 1 spec to expertise and after that buy a second spec. But that's it. One spec max, one expertise max, per skill.
Except for Exotic Weapons, where you have to purchase a Specialization for each exotic weapon (type) you want to use. So in theory, you could have one expertise and infinite specializations for exotics.
Actually, you can't choose an expertise for Exotic Weapons. It's the exemption of the skills,
I missed that bit in the Exotic Weapons skill. So, while you have to invest skill points into a separate skill for using exotic melee and ranged weapons (completely divorced from Firearms and Close Combat), and you
have to spend an extra 5 karma a whack for Specializations, you cannot take an Expertise for the weapons you're forced to already spend extra karma for? Wow...
It seems like this could have been handled far more easily by making exotic weapons require a specialization within Firearms or Close Combat to be able to use them. That would have allowed a number of things:
- Players would stick to two skills instead of three (streamlining).
- It would make it a more meaningful choice to use an exotic weapon because players would have to use one of the two specializations/expertises in the given skill.
- It would also prevent a player from only taking points in the Exotic Weapons skill and running around with monofilament whips, drug guns, and grenade/rocket launchers all the time.