I carry in a Nemesis in a cargo pocket that protects it pretty well.  That is the lightest holster I have found but does not protect the whole back of the gun from contact with the pants against my sweaty leg.  It gets sweaty and rained on when I am outside, as I ride 4 wheelers a lot.  Nothing seems to bother it.  Every coupla  weeks, i wipe it down and blow out the lint, and every 6-8 I clean it a bit.  Seems impervious to lint, sweat, rain, and dirt.  Have carried for about a year and it looks like new.  I have 100% confidence in its ruggedness.