Yes, so far, performing well.
We're only a year down the track, however, with plenty of wear-and-tear to come yet.
No information really [ as you say ] as to the likely cost and time-frame wrt maintenance, and eventual complete replacement, and no published information about injury statistics.
Anecdotally - not so good. A relocated trainer from the northern region has a family member who is a practising veterinarian, and the information forthcoming is concerning.
I have an northern-based owner, who is also diametrically opposed to the very idea of his horse working/racing on AWT's. He has lost one and had another with moderate issues, for which he places the blame squarely on the surface. Whether he is right, of course, I have no way of knowing, but I will respect his wishes regardless.
Working and racing should not be mandated as to the surface desired, IMO. Some choice should be available for trainers/horses alike, given the exigencies of location, etc. To be forced to race and/or work on an unsuitable surface is not really the way it should be.