Should David Cameron call for UK purchase of V-22s?

http://www.conservatives.com/tile.do...&obj_id=131435
In Afghanistan, British troops are playing the leading role in one of
the toughest parts - Helmand province.

We will continue to press the Government to do everything it can to
ensure our troops have sufficient support, including helicopter lift
capacity.

Afghanistan is really tough for helicopters, considering distance and
altitude parameters.

Wouldn't the V-22 be a better match?

-HJC