I didn't come across any issues during installation. Despite the smaller size of the X-Jupiter Jr. most of the interior pieces are rolled and I did not encounter any sharp edges. Since both fans have pass-through power connectors I was able to plug both into the built-in fan controller output, and although the fan controller input and front panel LED's did not offer the same pass-through design, this only used up one extra molex connection, which nearly all power supplies should be capable of providing. The tool-less drive locks/rails hold things securely in place, as do the riser card snaps provided you take care not to dislodge them when opening/closing.
On to final thoughts and conclusion of the X-Jupiter Jr.