I honestly have heard way too many things regarding either or
from what I have determined
If driving slowly, relatively straigh through very icy conditions/very deep snow
a locker is going to be wicked as it is basically a spool (especially both front and rear)
if driving on patchy ice, need to be able to accelerate through a turn w/ slippery conditions
a LSD is desired as a locker will just basically spin you right around
so tell me, if I install the 10 bolt lsd into the rear
can I install a electric locker or an ARB?
i'm sure that is much more expensive but I think safer