I have pushed the bike up to close to the speeds I used to run on the old tire and have found nothing that I can complain about.
I went for a 650km ride today. Variable terrain, a bit of everything, some of it out in the sticks, straight, no other traffic around even on this public holiday. There is one thing I can complain about: CT nominal is definitely lower than FJR nominal. I managed to get CT nominal increased by about 10 km/h by upping the CT tyre pressure as suggested in this thread. Today it was at 2.5 bar (36psi) and it is almost uncomfortable, yet at 20-25 km/h below (my) FJR nominal it starts to develop that damn weave. Even before the weave it starts to feel less "planted" and just a little more unstable than at the same speed with a moto tyre.
I guess I can up the pressure some more, but I don't think I will - the (perceived?) discomfort on bumpy roads (of which we have enough) is not worth it and its not that often that I have the opportunity approach nominal speeds.