I have shiver. 
My new Youtube Channel with CoH info
You might know me as FlintEastwood now on Freedom
Well...Welcome to the super slow club, I guess. I made ice/psi to stack slows using scream + shockwave +shiver + arctic air. I've found it's pretty redundant since, at a certain point, they just die before they can attack again.
It's still very helpful when fighting +4s and, to a lesser extent, AVs. Plus you can slot some good sets into shiver if you six slot it; high ranged def + acc or ranged def, recharge, and max end. The max end would probably help you out a bit with end issues, at least.
Active (Freedom): Setna (Ice/Psi Dom), Arram (WP/KM Tank), Tesmiel (Elec/SS Tank), Astredax (Robot/Dark Mastermind), Operative Vidali (melee fortunata)
Retired (Virtue): Gaav (Inv/EM Tank), Baqra (Fire/SS Tank)
Which is an issue, as AA takes massive end like hot feet and choking cloud. I threw 2 end costs only into chilling embrace but I bet anything I am way past the slow cap without slotting any slow enhancers whatsoever.
My new Youtube Channel with CoH info
You might know me as FlintEastwood now on Freedom
Well, it's not a total mistake to grab chilling embrace...I don't think the radius is as large as arctic air's, but even if they hit the slow cap they'll still get -recharge. Plus you don't have to use shiver.
Hasten's definitely worth getting, though.
Active (Freedom): Setna (Ice/Psi Dom), Arram (WP/KM Tank), Tesmiel (Elec/SS Tank), Astredax (Robot/Dark Mastermind), Operative Vidali (melee fortunata)
Retired (Virtue): Gaav (Inv/EM Tank), Baqra (Fire/SS Tank)