I disagree. I'm not sure about the chaos marine codex, but in a short paragraph above the armoury section in the normal space marine codex it says that anyone getting weapons from the armoury can choose up to 2 weapons with 1 of them being a two-handed weapon
Ok, for a start, that has nothing to do with Chaos marines.
And it has nothing to do with how many weapons a model may HAVE, it just limits the weapons you may *buy* from the armoury. Even a regular SM can carry two two handed weapons if he already comes with one. You;re just not allowed to *buy* two *from the armoury.* It's a common assumption people have that the armoury limit a) somehow applies to everyone and b) limits how many weapons a model can carry. A chaplain who comes with a crozius may still buy two other weapons from the armoury and keep his CA, for example. (Take a look at the new powerfist chaplain, he's got a fist, a CA and a bolt pistol)
And that has absolutely nothing to do with chaos. The new line of codices (From Eldar onwards) don't even *have* an armoury. A model is assigned speciffic weapons and is then given the option to add or replace weapons from a certain list.
All CSM come standard with pistol, CCW and bolter, right out of the box now, so that shoots the two weapon idea right in the foot.
The new Chaos Lord comes with the following weapons.
Bolt Pistol
CCW
He may replace his pistol with a plas pistol.
He may replace his CCW with one of a list of special close combat weapons (PW, fist, claws, daemon weapon, etc)
In *addition* to those, he may have a twinlinked bolter or a combi-weapon
So his lord can replace his CCW with a daemon weapon, buy a twin-linked bolter AND he keeps his pistol and it's all legal. Because the daemon weapon is two handed then he doesn't get a bonus attack for the pistol, BUT he can fire the pistol in the shooting phase instead of the bolter and still charge.
Bottom line for new chaos is this: Unless the weapon options for the chaos lord say that he has to replace his bolter with a daemon weapon, then he gets to carry and use both. This is why the gods of chaos invented rifle straps, pistol holsters and scabbards. you sheathe the sword, you fire the bolter, you sling the bolter, you draw the daemon blade. Simple.
And, cccp, *all* daemon weapons are 2-handed now.