Me: 5'10" 175-180 lbs. 176 BMT 94, mounted with G3 Ions.
They weigh 1450 grams per ski on average on my scale.
I've used these about 8 days in a variety of conditions and so far I'm very happy with them.
I mounted them myself. Mount went smoothly. No spinners. The core seemed solid when tapping the holes. As long as the pattern falls within the H shaped reinforced area of the BMT, you should be fine with mounting anything you want. The reinforced area is 26.2-54.2 mm wide according to the template. This review has a good picture of the mounting template:
These skis run a little long compared to most brands. They're just as long as my 178 Dynastars. I'm very happy with the 176 size for the BMT 94. For a wider pow ski (like the 109), I feel like I'm a bit between sizes.
I've had them in pow 2 days. One day was about a foot of light pow on a soft base, so it felt pretty bottomless. The other day was boot top. They float well for their size. They plane well once you get up to speed. They don't float as well as a fatter, dedicated pow ski (as you would expect), but they perform well for their size. I bought them to be more of a ski mountaineering/spring weapon, so pow performance isn't a huge deal for me for these skis, but they perform more than adequately.
1 day of groomers to test them out, and they carve really well for a ski of their weight. Very good edge hold and they ski like a much heavier ski, which is a compliment. They're not a metal laminate crusher, but expectations were exceeded as far as dampness, carving ability, and edge hold given the weight.
That said, they're fun in corn. Very quick edge to edge but not hooky.
I had them in 1 reasonably steep couloir (40-45 degrees) with variable alpine snow. Edge hold was great and they're very easy to get around with the low swing weight and full rocker. The full rocker doesn't seem to compromise edge hold.
My only minor gripe would be that the full rocker gives up a little grip when skinning on firm skin tracks. But with good technique they're totally manageable and it's not worth docking any stars IMO. I like the way the ELP rocker skis, so I'll take this small compromise.
Durability seems fine, although long term durability remains to be seen. Base durability seems on par with other skis (I have hit a few rocks and just have superficial scratches). Same with topsheet durability - they don't seem any more prone to chipping. If anything I imagine it will be better than most sandwich/sidewall skis that tend to be prone to this.
So if you're looking for a well rounded touring ski with a bias to firm snow and technical skiing, look no further.