Is SUB safe to use? Whos IP gets routed. And what are its actual capabilities.

Best bets for direct contact with devs are the weekly Periscope Q&A with Abram their CIO, tweeting Dan their tech lead, or attending SUBLOCC this month since the topic will be 0.2.0 and presented by Dan. Dan was even entertaining making the topic about questions like that.

Very few in the community would likely be able to answer regarding specific methods like this. As far as I know on the system side they're routing traffic in a way that your system will never know so I'm unsure of any sort of masking that may also be external to your system. I know that Justin had made it clear that after the next version they'll need folks to willingly submit reports since the nodes will be anonymous.

/r/SubstratumNetwork Thread