Lipo-impact damage?

[Gustav]

I'm wondering how robust lipos are in an offroad environment.i would leave them somewhere after a run where i can see if they swell,and they'd be stored in a safety case.Also, i'll use FMA impad to protect them from impacts.i was wondering what the risk of a short is due to the inevitable rough and tumble,have any of you guys ever had a problem or is this worrying about nothing?

i think when the plane guys have a problem seems to be when they piledrive into the groung from 100ft or so but i reckon we must pull some high Gs in a bad tumble or landing big jumps.

i'm getting them anyway,i'm just wondering how hard they are to damage.

Thanks for your comments.