I don't know if I'd call it smart or not.... it is highly unusual for a scammer to use voice over email though (not completely unheard of, just very rare). The majority of them don't want their accents to be heard. But there are times when the voice is a part of the plan, and often it is "a paid actor" doing the voicing.
Thanks for posting those email addresses, phone #, and the M. O. now other people can use search engines to find them
Keep in mind that since this scammer almost had you ( as his victim) he will now try different ways to get back in touch with you, or pass your information onto his scammer buddies and get a "commission" on any of their ill gotten gains if you fall for one of their scams. So be careful of new email names you don't recognize. Also phone calls that you don't know who the # belongs to, just don't answer them. If it is important enough they will leave a message for you.