I had questions from some users, hope this answers:
Is it as flexible as KPE stock cable? Well, answer is - it just can`t be! Look at this pic:
It is just so dramatic increase in copper weight and strand count. KPE stock cable is pretty "loosely" braided and has very thin & soft wires.
Basically my own sleeved wire is like 3 KPE cable wires put in bunch together as "triangular" way.
And like I`ve already told on threads, extra layer of polyester/silk wounding around copper + sleeving and braiding tightness will determine the overall tightness/softness of cable. For me it is between good and great but is improving over usage as bond between sleeve, polyester/silk and copper gets "looser" from inside.
For what it is worth, I think it is softer than Van Damme XKE Pro-patch cable (which is usually my go-to cable with audio gear for flexibility, price and high quality (quite low impedance):
http://www.van-damme.com/vandamme_product/van-damme-pro-grade-classic-xke-pro-patch-cable/
If I compare 4-core braid of self-made cable vs. iBasso IT01, then I think if same loosely braided as latter, that self-made cable is actually softer and more flexible. 1-core thickness is about same on both.