Cheers for that. If you think the beercan is intimidating, you should try a modern 70-200 F2.8! I have the sigma version that I use on my 7 AF camera (as well as d!g!tal) and that is massive in comparison. I actually use the beercan when I want to travel light!
My biggest hassle is I haven't seen too many of these advertised locally (locally=Australia), so I need to factor in postage (& the ebay link you posted above is quoting $70 for postage!!!!)