Any thoughts on buying a "travel" pack.... vs using a
backpack and then carrying a cover that goes over it to
contain straps and such for when traveling by air or
train?

Im thinking Id like to buy some kind of backpack for
travel purposes..... like kicking around the US...or
even touring Europe.... but know little abt them.

If you would recommended a true travel pack..... what
brands and models are considered good units?