"The folks who charged interest?"

Usury, as in, "an unconscionable or exorbitant rate or amount of interest; specifically : interest in excess of a legal rate charged to a borrower for the use of money"
http://www.m-w.com/dictionary/usury

Was then and is now immoral. But lending money and charging interest is not the same as usury. Modern banking as it's been practiced by western world for last few centuries could not be considered immoral by anyone who is rational and wise. I'm not saying the people involved in banking are especially moral any more than I would claim priests are especially moral, but the activity they are involved in can be said to be good.

Without trying to get into the details, usury is very similar to slavery and high government taxes. Jesus probably would not be too concerned with modern banks general practice or the modern "labor market", but He might be concerned about high levels of taxes in the modern western world.

In addition and probably far far more significant was the association money lenders and The Temple. Ask your self why there were money lenders at the temple?
Btw, it could be somewhat related to carbon offsets.

"And how did Jesus live, personally? Communally, perhaps?"

Who doesn't live communally? {As in, ever in history of humans and everywhere that humans have lived- the only possible exception [in degree] being hermits or psychopaths.}

But are you playing with terms, Jesus didn't live in what we know as anything like a communist commune: "A theoretical economic system characterized by the collective ownership of property and by the organization of labor for the common advantage of all members."
http://www.thefreedictionary.com/communism

"Try again. Without the "maybe"."

As long as I'm agnostic, "maybe" will continue be a part of it. Nor does it seem right to speak for anyone- and in particular such persons as Christ.