I did that and still have a useable device.
That was easy.
Only problem I ran into was restoring a backup I made in TWRP. Forced me to RUU the device back to stock, but it is still unlockable I am sure, as it says "relocked".
Just have to give it another go.
try cwr, I had issues with twrp on my note 2. Dont get me wrong I love and prefer twrp over cwr it just seems cwr seems to get out to a fast start while twrp takes a bit of time to get the coding right. Now once twrp is ready it is one of the best (if not the best in my opinion) recoveries out there.
I just did it, took me about an hour as I had to install adb first as well. I'm now unlocked, rooted, and running custom recovery.
A friend of mine with the DNA unlocked and rooted. Then re locked and went back to stock then unlocked and rooted again. Quite a list of steps to do all this but it only took him 20-30 minutes since he had already did it earlier. This phone really surprised me on build and how smooth it is. Go into to be hard to pick between this and the Note 2.