I rarely use them. Typical list for me is
Celestine - Yes I run her solo with the understanding she is a target.
Full Celestian Squad w 2Melta VSS (combi melta/PS) Rhino
3X BSS - FL/HF, Rhinos
Battle Conclave - 3 X Crusader, 2X AF, 4 X DCA, Rhino
2X Dominion Squads 5 Sisters - 2X Melta, Immolator -TLMM
Retributor 10 Sisters - 4x HB, Immolator -TLMM (deploys empty and goes tank hunting).