I got the JH|13 PROs today and I had them in my ears as much as I could at work. Checked them out with the iPhone and the HeadRoom Desktop Amp/Dac. You can guess which one sounded better, but both were as good as I have heard either with IEMs.
These are my first customs so I need to play them some and get used to them and make sure I have them in right, but just walking around at lunch they stayed sealed and sounded fantastic. Looking forward to spending some time with these and then comparing lots of amps with them.
A few initial pics to get the idea.


