Greg owns a car wash, lives in a van, and keeps most of his belongings in a storage unit. Rings of true life.
There is a Steven Universe panel at Comic Con this year: http://comiccon2014.sched.org/event/cdcc0562488b4c75269909fb5c92f44d?iframe=no&w=i:680;&sidebar=yes&bg=no#.U813h5RdXIsYes, Tom will be there.
Here's the video. I love the silence.
The way he says "studs" had me rewinding this on the DVR a few times.