Well, the certificate of compliance still isn't on Yaesu's website (or the radio, for that matter) so I phoned them and they Emailed it to me.
I haven't used it in earnest yet, but so far I'm impressed with it - a lot of functionality in a small package and the model I bought came with accessories such as an adapter for my headset. Seems reasonably usable. To my surprise there is an ILS function, but it only gives you a glideslope on the 750... I'm not sure how useful that sounds, but for a VFR permit aircraft it's not a major concern!
One interesting fact I have noticed so far is that when you're scrolling through the channels, the squelch settings are quite different for the 8.33 channels compared to the 25khz channels. A few months and I should be able to test it in the air.