It only took eight months! For those who don't follow me on Twitter, why not? And also, you may not be aware I've been trying to keep people bumping my bug report since April. It seems that 4.3 has finally brought an end to the ordeal.
scu at the Consortium forums has posted that GCEs are now proccing from Bountiful Bags and I can now confirm it from my own experience. At the moment Inferno Rubies are too profitable to warrant making spikes to DE but I'm sure once that changes I'll be incredibly pleased over this long-time-coming fix.