I had my training on it today. Its not actually a bad system and many of the bugs will be ironed out over the coming months on the Northern side of things anyway. The plan is that all the stock on Northern will have a secondary wifi system just for the machines to work off so that will eventually put to bed the connection issues.
It will still do cards offline and you can swipe foreign cards but not cards with chips in. It prints quickly and the card payments are very quick so long as you remember to press the right buttons. Unfortunately the days of swiping normal cards are over and there will be no more tickets issued with an empty bank account when you are broke before payday. Its very to easy excess fares on board now, Weekly Seasons come with a QR code so you dont even need to put it through the barrier anymore once the scanners are working. It can also scan mobile tickets though the scanner wont be working till December. Eventually every ticket will have a QR code I believe. It has a scanner for warrants and RTVs, it will do split payments very easily. In some respects its better than the Star Desktop I normally use.
Its absolutely light years ahead of Avantix and working in the OTAP I will be glad to see the back of it.