Good programme on ITV last night 'Road Warriors' - a fly-on-the-wall documentary about the hazards of land convoy work in Afghanistan. IEDs were stated to be the primary threat and anything which can reduce that would be very welcome.
However, flail tanks are very slow - about 1.5 mph - and only effective against contact-detonated mines. No use against buried IEDs triggered remotely or against roadside booby-traps. In a built up area they would be lethal to their crews due to their extreme vulnerability.