Ok I can't help pondering, so I stick a modified rebel to a rod, and tried it out. The rod heat up very fast, I couldn't hold it for long, I could use a lower power but then I won't be able to tell the real ability of the Rebel in the reflector. The reflector also has to be removed so the shock absorber won't push it back in to the bezel during the testing.
The beam looks decent, good size hotspot, good spill. The tower has been planned but there are certain issues to be dealt with. I'll post some beamshots next week.