Thanks for you $0.02.
Yes, I have gotten kvm running, there was a learning curve though.
On my 2nd vm install I was playing with fedora 20 to do a 2 release upgrade to 22 & found that the default disk size was lacking space, requiring resizing disk. I read a few different options on resizing, whch resulted in the disk being resized, but, neither gparted, nor the os saw the change.
I ended up making a new disk & cloning the os to it & removing old disk, which worked quite well.
As far as how the vm ran, it still lagged a little like vbox, but not as much. Which could possibly be due the fact that I only have 4Gigs ram on that machine.I do have 2 great desktops that have plenty of ram but rarely use them. Maybe when I get a chance, I'll try kvm on 1 of them to get a true kvm experience.
I actually have 2 vm's on the system & never thought to check to see if there's a difference in the ip-address on them, but will check soon.

My apologies for taking soo long to respond as I've been doing homework & it gets hard to keep up with my threads.

FYI:
I opened this thread to know more about a potentially new GPU virtualization option.

@pearlseattle
I only wish that I was qualified to answer any of the questions you asked in your thread. At the present time I am still learning about kvm. I hope you get you questions answered.