https://i.lensdump.com/i/i5OXMq.jpg
Some pictures :) There is 1.5mm of camber per ski, so 3mm total. I have the 178 one mounted with ATK R12 2020, about 2kg ski + binding. The ATK R12 2020 97mm stoppers fits the 99mm Mantra VW without bending but it's tight.
Basically when looking at the specs it looks like a lighter wider Kendo. This is also what I experienced at the resort, on groomed slopes. It's quite nimble but still quite stable. As turny as my 2017 kendo, so more than my 2017 flat Mantra. They carve quite well and are quite dynamic, more than the 2017 kendo. They're not that stiff about the same as the BMT 94 I'd say (I sold them so can't compare IRL but telling by memory)
I did my first tour with them today.
1000m d+ from the lift. On the up traction was ok considering the skintrack was in hard snow sometimes icy.
On the down I've had powder, hard snow, and some crust. Some clouds came just when I started to ski so I didn't went as fast as I wished.
In powder I'd say they float just a touch better than the 176 BMT 94. There are more turny that was I'm used to but it was ok. In crust the tail was a bit hooky sometimes but not a lot. I've just detuned a little bit the rockered sections to see if it helps.
In soft snow (pow and crust) I have to say that I wished I had my BMT 109 which are better, more "instinctive", with their reverse camber. But on the up with the short sections of icy skin track I was happy to be on the mantra. And if the snow had been hard or icy on the down, the BMT 109 would have been a bit scary. Anyway I sold them already so I don't have the choice anymore :) Replaced them with Katana VW.
On groomed slopes going back home I was happy to have the Mantra VW so I could still have fun, with the BMT 109 you just go down but can't really carve, I mean you can if you really want to but it's not fun.
So I'd say it's a pretty good versatile ski, it's not magic in pow like the BMT 109 but you can't have everything.
About the mounting point I'm on the line (well 1mm back so on the line), seems good to me ...