So it seems that the CycloDS iEvolution works with the 3DS!
Quoted from Team Cyclops' site:
CycloDS iEvolution running on 3DS in DSL mode on stock bootstrap and 2.1 firmware, no changes necessary - it just works. Unfortunately DSi mode is unable to be tested at the current time due to the lack of a Japanese region bootstrap.
fingerz: Hey there, I'm still around. :P
Like fallenleader said, I'm often busy on GBAtemp, plus I don't use my DS/CycloDS as much as I did so I haven't been visiting quite as often…plus I was away for about ten days and got back on Saturday, so I was absent pretty much everywhere during that.
I did get a 3DS on the 19th though. Originally I was still unsure as to whether I'd get one, but I saw that in GAME the Cosmos Black models were being offered for £148.99, and I thought that's the cheapest I'd seen/heard of and it probably wouldn't be that cheap anywhere else for a long time, so I got one there. At the moment I have Ridge Racer 3D and Steel Diver.