Does everything work? Last time I used a 6 only network (Fosdem) they warned that Android doesnt like 6 only, and I found some services that didnt work over 6to4 at all.
As far as I can tell it works extremely well, using android 4.2.2 / nexus 5. You get a real ipv6 address and, 192.0.0.4 for your ipv4 address. Applications think both ipv4 and ipv6 are available.
Edit: above information is based on using T-Mobile USA for internet connectivity
