Hey JK, I have not been up the Lhotse Wall, but on any mountain in general a snow/iceclimb is much easier than a rockclimb, as long as the snow is not deep.
There is a good track on the Nepal side, so it is relatively easy. There are dangers lower down: the Khumbu Icefall is precarious and many accidents have happened.
On the North side the dangers are higher: the summitday is very long as the ridge is not steep at all, so it takes a long time, also because of the 3 rock Steps.
I noticed a big difference between going up after snow vs a 'dry year'. With some snow the track gets many times easier, but the Steps -and the altitude- remain...