I had the bumper of the car, very easy to do (thanks to guides on here) then it's a piece of cake.
I've just done a temporary fitment and used cable ties. The cable tie holder that you stick one with double sided tape worked a treat and created a fixing point to run the tie through (so no holes made in bumper).
Totally reversible.
Like these:
http://www.amazon.co.uk/gp/aw/d/B007JVWDP8?pc_redir=1409490157&robot_redir=1
The plan is to later on put a little rubber edging mesh for that (better than) OEM finish. that is more time consuming.
To be honest even with the cable ties (hidden) you cannot tell it's not anything but meant to be there.
I looked at M mesh and saw the diamond shape but to my eye it looks cheap. So I looked at other brands and was surprised at some of the cheapo plasticy meshes try used too but settled for a 'Kamei style' mesh pattern as on he famous Audi/VW tuner grilles. It's a wider shape more in keeping with the low wife look of our cars to my eye..will put a link, must take a pic too..