I just purchased a 60d and am about to take it on a month long trip overseas. The ability to charge batteries will be "iffy" (on a boat, strange power outlets, etc.) and I won't know till I get there if I can recharge.
Should I buy a grip for the trip? I know some offer the advantage of running on AA batteries. What kind of battery life can I reasonably expect without the grip?
Also, a friend wants a grip for an XTi and I'm having difficulty finding them for sale. Any suggestions (brand or place to buy)?