I just got my first Kingsize and my first Ti nibs. I bought an EF, a M ground to stub, and a B ground to stub. I'm reserving judgment on the stubs right now: these are my first stubs, and I need to get the hang of stubs before judging the nibs.
As for my EF, it's remarkably wet with Akkerman #8 Diepduinwaterblauw. I suspect that the Ti material has a lot to do with it. It has line variation and is easy to widen the line with a bit of pressure. I don't try to flex it, just pressure of normal writing. It has a very nice line, and starts off just right each time. It might dry out if not writing and uncapped a little bit faster than some other pens, but it restarts pretty quickly.
I agree with the feedback comments above. It's not writing on glass smooth. It's closer to a pencil, as kd3 mentioned. It's not objectionable. FWIW, all the EF nibs I've tried have some amount of feedback, simply because the nibs have so much less on paper.
I am a little amused at the amount of nib creep with this pen and ink. The titanium matte finish is probably the cause of this. I do not find this objectionable.