I finally bought these boots after considering this style for about a year, and I wish I had read more reviews on them before I did. Much to my horror, the back edge of the heel structure is terribly inflexible and refuses to form to your foot so the shoe consistently slips. Because of this, even with high socks on, my heels blistered so badly the first day I wore them that I couldn't wear anything but flip flops for a couple days afterwards. I have since manually tried to break the heel in (with a hammer, no joke) and even bought Dr. Scholls insoles to make the shoes tighter, thinking that might stop the slipping, but the heel-rubbing persists. Initially, I thought the boots looked awesome and fit amazingly, but now they sting my heels and are tighter than my other shoes because of the insoles...

However, if you are dead-set on making these shoes work, may I suggest a few things:
- wear thick, high socks and maybe buy insoles to lessen the shoe-slip
- get heel guards or use big band-aids or tape to avoid blisters
- get accustomed to the shoes by wearing them for only a few hours at a time instead of whole days (wear them around your house for a while, maybe)

Or you could always try to find a similar style in a more comfortable boot...
Best of luck!