Yes, in 1/72 scale, the kits resemble matchbox style cars. Casual observers might think that is what they are and attempt to handle one like it is made of durable diecast metal. Yes, that has happened to some of my built kits. I now place those sizes in a glass display case or on a small diorama base so people do not attempt to pick them up.
There are many 1/35 scale MRAPs available. I'd go that route with a Maxx Pro or some similar MRAP like the M-ATV.
http://www.warwheels.net/Review_Model_Kinetic_MaxxPro_KEENAN.html