Thanks a lot for the feedback, guys.
Yes, the glows and such are done in ArionFX. I haven't yet tried Octane's glow tools but I've never been a big fan of those included in V-Ray and Octane. Since these are always post effects (unlike DOF, which gains a lot if done in-camera), I'm not convinced doing them in the frame buffer really adds anything... Maybe I'm wrong.
Yes, the statue is a little low-res. It's one of those I scanned myself and it was tough given the absence of very sharp surface detail.
The bases and pedestals all have materials (reflective and pretty rough) but no textures, that's right.