I'm sure there are circumstances where it can be usefull as you have mentioned but there are very curcumstantial. Zach remember we do have lichborne to keep of fears. If used correctly AMS can also keep off fears/sheep and mind control. Usually if a caster class like that is targeting me i engage them and if i see them casting that I'll use mind freeze, stragulate etc. But remember other classes have abilities that does this effect to us. This is somthing they want to happen to us, granted we say when it happens and not them but still.

@ Arek: Nothing like an ice block, Ice block is more of a dump player threat ability. With this ability we still take damage. Sure you could use it to break cc, but I'd usually use my trinket (unless it can be broken by lichborne), if its a rogue cc'ing me ill get my ghoul to gnaw the rogue, use trinket, apply icebound fortitude.

@ Both, it does have some uses for sure, but it's not worth al lthe trade off. What you are sacrificing is Mobility (very important in pvp, especially for melee), strength boost and a glyph slot.