Here's the final, assembled result.
The 3D printed enclosure includes vents across the top (including over the heat sink) and on the lower rear panel for convective cooling. All connections come in the rear panel to keep the overall size small. A notch on either side mates with the locking ears on the power supply module, and little slots on either side allow a flat blade screwdriver to depress those ears for easy removal. The spacing of the rear panel connectors allow the output ferrites to stand vertically on either side, out of the way of the connectors and the vents.
I put heat shrink around each ferrite to protect the cores and their wires. Then it's just a matter of wiring things up. All wire, including in the ferrites, is 18ga high strand count silicone insulated test lead wire.
The electrical performance of the assembled unit is reasonable for a backpack supply. Final noise figures are <500mVpp at 10V / 2.5A output. At the moment I have it powering a CAN based project, supplying 13V at about 100mA, and the noise is below 100mV.
Besides the module, here's the BOM (all part numbers are DigiKey):
Q1 Red banana panel jack, #J151-ND, $0.65 each
Q1 Black banana panel jack, #J152-ND, $0.65 each
Q1 5.5mm x 2.5mm DC power jack, #SC1048-ND, $2.71 each
Q2 6.3mm NiZn ferrite cores, #399-10871-ND, $0.60 each
18ga test lead wire, your choice of colors
3D filament, your choice of material and color
Finished price under $30 plus an old laptop power brick I had lying around.
Hope this helps someone... have fun!