I am a very bad tester and writer, but I will try to write something more or less useful.
In any case, I have already used V1 for quite a long time, so there were no difficulties with adding pair, as well as with transferring funds to the L2 of the test network.
The process is relatively short, but you can have time to fall asleep while it is being processed
In general, the experience of using V2 is positive. It is impossible not to note significant changes in the design, the site looks excellent