It saved my life as often as killed me

I go for Churchill if I have complex army behind. I mean, double vetted 6 pounders, double vetted Tommies, 2 Pits or something, then all I need is a damage sponge to keep vision, bait, protect vunerable crew etc.
If I have 17pounder and 6 pounder or double/triple 6 pounder and resources let me, I go for Croc+Churchill. Just move 3 pounders behind to stop any vehicles, while Croc+Church will melt any infantry/crew weapons.