Rule Question #1: Can Harlequin units choose to not use their kisses? Like many close combat specialists, harlequins do not want to wipe out their enemy unit on the turn they charge. If they do, they are out in the open for the enemy to shoot at them. They would much rather be safely locked in
CC during the enemy's turn.
Many tactics have been employed to minimize enemy casualties on the charge, such as limiting the number of harlequin's kisses in the squad, charging on the side of a unit, or the conga line that only allows 1-2 harlequins to get into combat.
Here's another idea.
Don't use the kisses on the turn you charge. On page 46 of the
BGB, "Special Close Combat Attacks", second paragraph, it says that "Models with special close combat attacks can choose not to use them and attack normally instead". It goes on to describe the special close combat attacks, including rending weapons.
At first glance, page 38 under "who can fight", last paragraph seems to contradict this: "All engaged models fight with their full number of attacks and count the benefits of any special close combat attack forms they have." However, I think this is a case of a more general rule that is not referring to this topic in particular (p 38 "Who can fight?" ) being superseded by a more specific rule that deals with exactly this topic (p 46 "Special Close Combat Attacks" ).
So when necessary, attack using your harlequin's normal attacks, and use the kiss as nothing more than +1 A. That way you will kill much fewer enemies, and be safely locked in close combat on the enemy's turn.
With the kiss, a charging harlequin will kill 1 marine on average. Without, that same harlequin will only kill 0.44 of a marine. That's a big difference that you can use to make sure you don't wipe out the squad. You can figure out more numbers here in an online calculator I built:
http://www.dimentians.com/w40k_killing_power.cfm I have also avoided using the kisses in the enemy's
CC phase when I wanted to be sure to be able to hit and run towards something nastier.
Rule Question #2: Can individual Harlequin models choose to not use their kisses? Here's an even nastier idea that should definitely start some debate... In that quote from page 46 of the
BGB above, it says that
models can choose to attack normally. Not units, models. That important distinction should allow you to choose exactly how many kisses you want to use in a given turn. If you know the math, you can basically pick how many casualties you want to inflict! (on average, of course).
I've never used it this way, I've always had the whole unit use them or not. But the
BGB appears to allow this. What does everyone else here think about this?