That's the actual point of concern, for sure~ not the currents.
Does the liveaboard's website show the "panga" ? (or RIB, Zodiac or ...?)
Very few liveaboard websites have such images. Many lesser grade liveabaords will vary widely (during the week) using different smaller boats as they appear on a contractual basis- but this is not typical in the Galapagos.
As far as website imagery- even fewer show the intricacy of the fantail deck, the flat surface that you stand on in the back of the liveaboard to make such transfers.
I go into this because many times when people are faced with similar concerns, occasionally the answers can be found with a detailed examination of the vessel's website or sometimes even trip report photo galleries.
Always accept the firm grip of an out-stretched hand, and be sure to offer one as well. Many divers on liveaboards seem to avoid such contact (notably the males), but it is commonplace on working vessels, military or commercial.
Good advice, I'll check their website and see what I can find out. I'm going with Agressor and the customer service guy confirmed they use pangas. Thanks.