I wrote an article about this very situation here
http://the-gadgeteer.com/2011/09/11/...vel-companion/
I don't travel overseas much but when I do the K3 3g is a great tool. I've more than saved the extra cost for the 3g compared to Australian International Roaming Fees.
I don't really care that the Touch won't 3G browse at the moment , my 3 is fine if not better than the Touch for how I use it at the moment.
Standard disclaimer though....YMMV