Ah bollocks - found your email, sorry.
You should be pretty clear on the tyre width question now? Basically, massive clearance in there as the photo earlier in the thread shows.
Audax (and various other things) didn't happen due to family issues. However, I did get out on a couple of wee road tours and the bike has been used 2/3 days every week for a 10 mile (each way) commute.
So far, the only changes I've made were to dump the Compact for a Triple (hey - I'm old and appreciate it when it's loaded up a bit) and recently stuck on a Brooks B17, which has been great.
The bike itself has given me no issues. Once it's moving it rolls along very predictably, even with panniers etc. The forks look a bit skinny, but haven't throw up any issues. I've yet to load it up completely (tent etc) that will come this year - however, I'm not expecting any problems.
Being Ti, it has survived the year unscathed, road salt etc just isn't an issue. The graphics on the Top Tube have started to flake off a bit where my thighs are touching them if I'm standing astride the bike. I'm not too fussed about the graphics anyway and might just remove them (nail varnish remover works a treat).
It's noticeably slower than my carbon road bike (currently a Focus Cayo which will soon be for sale), though I've yet to try it with a thinner 23/25mm tyre. I'm also thinking of getting something wider and knobby on it and trying some light off-roading. VN do a CX version of the Amazon but it does have slightly different geometry (including a steeper head tube).
If there's anything else specific you'd like to know, ask away.