Before anyone says 'don't', please, well... don't!
I know I'm getting some in a week for my birthday (because my wife thought it was hilarious when she tried to text a relative to get some and predictive text called them 'namesakes'

) and I may as well try them out.
On the face of it they don't seem too bad - 160 points for 10 (including sgt), all with infiltrate, stealth, move through cover, 5+
inv and 2A each. Their biggest downfall, of course is a lack of power weapons/rending etc and the fact that they need a pain token to get ranged weapons. The upside of course is that if they can get a token, they get
FNP and assault weapons.
The thought I had was to use them as an objective contesting unit. Infiltrate them into cover (preferably a building where their Stealth gives them a 3+ cover save) and look to either feed them a pain token via a haemonculus, or shoot up some nearby infantry and let them rush out and mop up. Either way they then get guns and are (for
DE anyway

) very survivable. Now that they present a tougher target, keep them moving from cover to cover until they can get on/near an objective away from my main assault. If they are ignored they can run around the backfield, if not they've done their job by pulling the enemy from where I want to go.
Any thoughts? Has anyone had success with Mandrakes using any method?
They'll probably not make it into my regular list but I always like to know how to use everything just in case...