In Sydney (and greater area I have found hatchy browns strongly banded and just nape banded, have seen young browns without almost always but have found one about a metre with a band (not very priminet)
Only found one (1) hatchy without a banded body, but have found heaps of hatchys so this in itself shows variation, and if you see Mirtschen's venom book look at the variation of the western's in one clutch.
nb never seen a confirmed wild western, but have always wanted a modesta.