As of r8335 & GameDir r2348, Items in a slot granted by LBE with the flag LBE_EXPLOSIONPROOF (<ItemFlag>2147483648</ItemFlag>) are protected from explosion damage (and cannot cause a chain reaction). In stock, I've added this to the 40mm Grenade Panel (item #1080). Up to now it was pretty useless - other LBE could take more grenades and other item sizes. Now it might be a viable alternative for the grenadier that might come under fire and doesn't want to instantly disintegrate.