As you probably know by now, the back welt on those boots is designed for snowshoe bindings. I also suspect the soles may be stiffer than most people here realize. I have a similar-looking pair of Columbia boots, which I also bought on sale, and they take strap-on crampons (e.g. G10s) well; though you might have to cut depressions in the boot heels to get the boot heels to fit between the crampon posts. I'm not going to say your boots are great, because they are not here where I can do my hard-to-quantify flex tests with my own hands.
Here's an issue to consider with any "winter mountaineering" boot system: unless you wear some sort of vapor barrier over or under your socks, these boots can be unpleasantly wet and cold on the inside on the second day of your trip. Judging by your profile picture, "winter mountaineering" probably also means winter camping for you. In particular, the Columbia boots have breathable cloth on top of primaloft, and it soaks up sweat like a sponge.
If you are thinking of getting stiff boots so you can use burly crampons, you better also be thinking about the ice axe you want. I would put that purchase way ahead of super-duper boots. My apologies if you have already done that part.