So I've been playing around the last week or so with my 6906, and a 6806....
I've been able to root and install the recovery easy enough on a the generic .534 build that is in the FTF thread. I believe it's the rogers one... So it does seem to pull some of the bell crap out... Putting the twrp backup data back on, gives me some of the apps back, but it doesn't seem quite as bad. At least you can then uninstall it if you don't want it. <G>
However, I've been trying to get up to the .290 builds that Nut has been providing. However, on every attempt I've been getting to a soft brick, when I use the flashtool to put the Kernel and baseband on.... Reflashing the .534 build at that point, gets me up and running again without any issue.
There is a generic 290, and new 132 build for the canadian 6906 that have been posted, but no root.... If you want stock and no mods.....
I haven't tried anything else at this point, since I'm still getting my feet wet.