The only problem with silver bullion is that it is so bulky and heavy. It is a lot easier to handle and store 10 one ounce gold American eagles than 600 one ounce silver eagles.
However, I agree that silver is a much better value right now than gold. We also just had a very nice pullback in silver/gold and this may be a good time to buy.
And if the shtf, the average Joe is going to be able to afford silver better than gold, which will cause silver's value to sky-rocket much more than gold.