A quick rummage in the garage and I found the unfinished model and took out the Spacex version of the Booster Rocket to see if it would sit well on the model. As the SWORD toy is quite heavy and more realistically based on the concept artwork, the ion engine nozzle is very narrow and getting the toy to stand on its end is almost impossible without a stand, whereas the Tri-ang Spacex version has a larger, flared engine which fit neatly into the hole on the base of the gantry i'd made. As these rather wonky photos show, the THOR rocket gantry does double duty as a smaller scale Booster Rocket facility!
So come on Mike - Probe Force Launch Pad next! Ive got a PF3 you can borrow if that helps!