The wireless IPsec link has been working flawlessly - the only problems I have encountered so far have been key lifetimes (they're too far short by default), and a power outage. The link is point to point via a middle hop, and this device is in another companies office.
They had an extended power outage the other day, and comms were lost...
Not too bad - over 3 months uptime without a hiccup
I'm still halfway through writing up the documentation - it will be linked here when its finished.