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Just curious, but does anyone run DL snipers in raiders? If you keep them in the raider, you can move them 11.9 inches, keep them behind the assault squads, shoot the raiders main gun and then the squads DLer gets to shoot. 2 DL shots from a regular squad, 3 DLs with the retinue, should cook most vehicles out there, yeah? I don't see this too much in army lists I've seen and thought I might give it a go.
Heavy weapons cant be fired from a vehicle when it moves, so lances cant be fired unless a raider is sitting still which is something you dont want to have happen on your part.
But to answer the second part of the question, yes people sometimes do use DLs in a raider for a reason being: 5 warriors with a lance on a raider totals up to 105 points which makes a good candidate for a ghost ship in an army. So what people do is start the infantry on foot on the board, while raiders zip around and pop big targets, while others act as deviants when it comes to covering the advance of strong HQ and elite units.
For example, you have 3 raiders and only one of them has a 5 man incubi retinue with a lord. You arent obligated to tell which raider has what, or which raider is even full of troops or not, as long as you have it written somewhere. This way your opponent has to pick which raider to shoot, if he pick wrong he wll have a lot of power attacks coming at him on a charge next turn.
Just something you may want to remember is that a Ravager costs the same or slightly more I can't quite remember so you may aswell just take a ravager.
As mentioned by WraithGuardian, you cannot shoot the lance from a warrior in a raider that has moved.
As mentioned by Triphinius, a 3 darklance ravager is the same cost as a min/max raider sniper squad.
I hope you decide against a min/max squad in any nature. However, separating a Raider Squad from their raider is a viable tactic. You may want to consider it depending on the terrain and enemy setup as the empty "ghost ship" (I call it a "decoy") tries to draw fire away from the more precious raiders.
In my experiences, the enemy will usually shoot first at any targets that are too close for his comfort and will even do so even if they know its empty. That trade off is worth it to me as I will often position the raider in a strategic location so if it crashes it could block line of sight for other advancing raiders.
The tactic does work but a savvy opponent could easily see the trick and call your bluff (which means that the empty raider may have a chance to take a "pot shot" at something valuable).
Thanks fellas! Sorry for the noob questions. I thought the rulebook mentioned something like all troops aboard an open topped transport can fire when the transport is moved up to X inches. Then I thought I might be able to do away with the ravager. But, as you have all pointed out already, heavy weapons are excluded from these rules, consarn it. Endarkened further, you have helped me discover another cunning plan though...micro squads left behind by ghost ships...I am not a fan of min/maxing, the DE are too fragile for that, but 2 ghost squads fleeting to cover might make a good pocket of resistance.
I haven't tried it, but i've always been tempted with a couple of ghost ships to protect my WWP deploy squad from assault and perhaps some shooting, has anyone tried this?
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WWP and other Dark Eldar how to