I got some unconventional body protection yesterday: a Bell BMX helmet; MSR MX RG2 motor cross pants; and MSR MX Revolver gloves. These provide much better protection than road clothes and helmet I'd been wearing. BMX helmet and MX pants will likely be too hot in weather above 70F, but yesterday they were comfortable on a hard 10-mile trail ride in 60F weather.
I got the motor cross pants and gloves instead of mtb body armour because LBS's don't stock body armour, and I want to try on for fit before buying. Local motor cross shop has lots of MX clothing.
Do any of you use motor cross clothing for MTBing?
What body protection do you use?