So purely for your own interest Tim, I'm currently working an issue with Velop support - although it shouldn't really affect your review, you might be interested to see what is 'under the hood' although not currently exposed in the admin UI.
Go to
http://192.168.1.1
Click on the 'Velop' word logo
Login using the local admin password
click on the 'CA' link (bottom of the page , opposite the link to the end user license'
Theres a whole heap of extra functionality in there (ability to change DHCP info etc, support for dynami RIP routing etc) - as I say obviously outside the scope of what an end-user would experience, but thought it might interest you to poke around.
On the backhaul conversation there are clearly 2 x 5Ghz radios in there , but its not clear if either is dedicated for this purposes - they just look like 2 radios (one with low channels, and one with high channel support)