jktowhere, I don't have a J30, and other than a trip to Costa Rica as a tourist, and a few tours through Panama Canal in Uncle Sam's Yacht Club and various drunken excursions into Mexico, can't offer you any tangible advice on the safety factor. But I do have an opinion based on LOTS of online reading of various other adventurer's.
Despite being just canvas, I think the integrated rooftop camping setup of the J30 is quite a bit more secure than a simple ground tent. There is a huge psychological difference of someone's accessibility and/or vunerability being inside a car verses being out of the car (in a tent).
Specifically, I am thinking of
Brad and Sheena, and their trials and travels through India. They often retreated into their van to seek a reprieve from those around them. I think the J30 would offer a similar sanctuary.
On the issue of connectivity, the crew from Life Remotely did a fantastic job reporting on their connectivity options in each of the 17 countries they visited, and they offer tons of advice on how to work remotely from the field.
http://liferemotely.com/
Hope that helps, wish I could tell you first hand!