holy chikkin strips!

undertail looks good but i'd get the bracket for it and move the plate up. it doesn't look bad at all when done with a nice little bracket, you could go right between the blinkers and then angle the tag up to clear the wheel.

as for the mesh vs. leather, mesh is no stronger than jeans. i've been with plenty of people that crashed in jeans and mesh gear and every one of them came out with rash, even sub 30mph lowsides. try lowsiding without gloves on.... mine saved my hands completely and that was only ~15mph.