I've now used the Studio3 for some days, mostly playing from my iPhone. Sorry, I did not take the time to compare to the V-Moda Crossfade 2, but I've found comparisons of Bluetooth headphones very cumbersome, with too much of a delay when switching to be useful.
So I listened for my overall impression during normal usage, with sometimes listening in a bit more closely. After all I did not buy it for home use, and I don't spent time with what one might call critical listening anymore. The simple question is: does it satisfactorily reproduce my music in the situations I intend to use it for, i.e. mostly on the go, while commuting, walking, maybe in a cafe, during work etc. And that it does. Yes, comparisons with my current mobile favorite, the K3003, won't end well for the Studio3, but I more and more came to love the option of wireless headphones for the use cases mentioned above.
The Studio3 is balanced enough for me to actually like its sound signature. No revisions to my initial comments, but now I know it still feels fine after some actual usage.
What I also learned with usage is that the padding on the headband could be a bit softer, but it works OK as long as it sits correctly. Cups could have been deeper, but the soft cover over the drivers works well and I don't feel discomfort. The cups should move a bit more around both axis, they tend to apply more pressure below the ear then above. Not a problem, but that could be perfected. Clamping force is rather high, but not bad.
They are much more comfortable to wear around the neck than the V-Moda models (which happen to have a metal gimbal pressing into my collarbone. Of course that comfort is to be expected, since that was the primary use case for Beats headphones until recently (add smiley here, but I hate the graphics and can't disable them after the move to the new forum...)
Bluetooth connection is... just about perfect. Very impressive. Nothing to add. It would still be nice if it could connect to more devices at the same time though: listening to music on my AK380 and automatically blending over to the phone call on my iPhone was a really nice feature with the CF2, while I did not even try the obviously seamless switch between Apple devices. That is just something I don't really use (if I listen to music coming from my Macbook there's an external DAC and a different headphone in play
That lead to my iPhone (again) becoming my primary source while on the go... so switching to a phone call does not involve more than one device anyway. This was an intended effect, I mainly bought the Studio3 for its integration with iOS, to simplify my music listening when not at home. Nevertheless I still take the AK with me for use at a cafe, together with the already mentioned K3003 -- which is a wonderful combination.
I've tried to disable ANC, switch between on and off. There was not enough of a difference to pass on the advantages, such as keeping my hearing intact as the fire sirens went off today at work (just for training fortunately). I did hear them when the music was not playing, and walking past them was no problem while my colleagues had to cover their ears. I would still like to have an option to set the default to off (the setting in the iOS bluetooth panel is also only temporary), but given the implementation I can see myself actually using it.
I'm definitely not missing sound profiles or a separate settings app. Yes, what B&W did with the PX50 does look nice, but I know that I would not use it beyond trying it out. Same happened with the app for the Sennheiser PXC550...