The Russian Army doesn't really use trucks a lot for that... they had plenty of BTRs for that role (on roads... BMPs for cross country or where the extra protection or firepower was required.)
Teh V shape doesn't need to be clearly obvious to have an effect... it just needs a bottom surface that is not flat... think in terms of swimming where using a flat or even a cupped hand it is easier to push the water to move yourself in one direction or another.
In the case of a vehicle a flat bottom means the upward rapidly moving gas is applied evenly to the bottom of the vehicle which means it is lifted and then dropped more efficiently, which is very damaging to the troops inside.
With an under surface that redirects the blast sideways away from the vehicle to the open air rather than back down into the ground to lift the vehicle the effect on the vehicle is reduced.
Remember when you are actually talking about wheeled vehicles and landmines the vehicle generally sets the mine off by driving over it with a wheel so rather than exploding under the belly (where a V shaped hull would do the most good) the mines will normally explode under the wheel and the blast will naturally be redirected away from the vehicle by the wheel arch... so most vehicles are naturally protected from mines, but not from remote detonated IEDs.
The thing is that whatever vehicle you use... the bad guys are generally not idiots so if you start using mine protected vehicles they will simply make bigger IEDs and quite frankly if they are prepared to put in the effort of making it really big there is not much you can actually do to save your soldiers except give them a truck each and keep them separated.
During the Vietnam war a standard VC trick was to wire up dud USAF bombs as boobytraps. Even just a 500lb bomb would result in an entire platoon disappearing in the explosion, but it was a case of a guerilla force using what it could get its hands on, and the USAF was delivering bombs in enormous numbers.
I suspect its use will be centred around perhaps special forces and police and paramilitary use rather than Army.
Remember the Taifun is the Kamaz product, the Typhoon is being developed by the makers of the BMP as the standard chassis for the light brigades and will be a 4 and 6 wheeled armoured vehicle for troop transport and air defence and artillery and "tank"/gun platform.
The Taifun is an armoured truck... and look carefully at this picture... especially the shape of the floor at the base of the seats... I rather suspect the hull is largely V shaped: