How do you -RP- a Warlock?

Not about the actual ways to rp Warlock -the Class-, more about... how do you actually find RP... as a Warlock.

Combat and stuff included, not just socially.

This may be different regionally, but on Argent Dawn EU, where I conduct my business, you kind of just don't?

Guilds? No Warlocks in recruitment. Events? Better not be a Warlock.

I don't want to play a Villain, or BBEG Cult of the Month. The Class Overview describes them as "often pledging themselves to noble causes and not innately evil".

This is what I want, and I can't seem to find it. This may be an AD-EU thing, this may be user error. I am kind of at the end of my rope, and perhaps some outside input and/or perspectives may help me.