Pre-2008, they were the stiffest boot offered by CWB. I had to stretch mine a little, but they were always easy to get into. The back of the boot is lined in that Lycra stuff, so I was able to slip in with no lube.
I have a pair of 05 or 06 Fuses and I liked them except that I have wide feet and I couldn't last a whole run without taking them off to regain feeling in my feet. I now have new bindings, if you want to buy them from me let me know.