I think that they could be sucessful in a WWP list, but as they do not have a transport, there is no reliable delivery system.
They do work very well as a wwp escort as long as your portal units do not have to need an aggressive placement. Bikes, scourges, hellions and beasts will do just fine with a conservative location even though it is only 6” (not counting the diameter of the portal) beyond your deployment line.
However, they are ideal when you do not have first move and you need to sit through your opponents shooting phase before moving forward – this will often bait your opponent into moving closer or get them to ignore you altogether (which is fine by me).
The other wwp is usually going to go on a raider so I will have one wwp that will walk forward and the other that is going to get aggressive with its placement (one low risk placement and high risk placement). I have even not needed the Harleys at all like in DoW deployments and have just put them in the portal instead. I remember once having the Harleys take the wwp/wracks raider when they first emerged – not the most reliable method but I feel the Harleys are flexible in this regard.
Just be sure to have a copy of the Eldar’s FAQ about VoT versus indirect fire.
I like to take:
1 Troupe Master w/fusion pistol and power weapon
1 Shadowseer w/fusion pistol and kiss
4 Troupes w/kisses
A little expensive but they do have synergy in a wwp list and often times they are assaulting in combo with wyches or hellions and thus far have made it to cc and won – they haven’t failed my basic expectations but I am a little bothered that they do not survive very long after that.
Mileage may vary.
