I would like to be able to block out a few hours a week working on Centos armv7 on either a cubie2 or cubietruck.
Johnny Hughes has built and released an image for the cubietruck build using RootFS Build Factory. You can read the blog post here http://seven.centos.org/2015/06/centos-7-1503-armv7hl-proof-of-concept-pre-a... This image does not have the root password set, so you will need a HDMI cable or a serial console cable.
You can generate an image yourself for your cubietruck with the root password set using the latest RootFS Build Factory https://github.com/mndar/rbf
David Tischler has tested the image built for Cubieboard 2. So you can give that a shot too.
For RBF, the README on github has everything to get you started. There are additional docs in the doc directory if you wish to add support for more boards.
Regards Mandar Joshi