Bushwalk Australia

I'm going to be walking the Overland Track at the end of August (first time in winter) and was wondering whether snowshoes are a necessity or a luxury for the walk at this time of year (such as http://www.yowies.com.au/)? Or whether I could get away with just some boot chains (http://www.xtm.com.au/prods_boots_chains.html or similar)? Alternatively, does anyone have any other suggestions?

Cheers,

Welcome
Theres a good chance you wont need them, if you do (and dont have them) you could be delayed at the start or along the way (in one of the first two huts more than likely) for up to a few days.