That is one funkly lamp eh lol.

I remember when these were sold. There were also versions which were like a normal 20w CFL but on it's side. The main problem with these was that no well known companies made them meaning your only option was to get low quality ones. I think some versions were also PIR and instant start so not good at all. If I had a fitting with one of these I'd either run it on a photocell or have it on 24/7.

Reminds of some things Opple did - Proprietary lamp with questionable future availability. Though it's interesting thought experiment what we would have thought if we would be around in the early 80s when the 2D were introduced....

I’m surprised these didn’t catch on more?, sadly these were cheaply made tube with daylight white halo phosphates!, like Ollie says, if the top manufacturers would have used tri-phosphor T5s and coiled them like this, I reckon they would have found a market in industry?

That would be allready fulfilled by the cheaper to make and better efficiency PL