For a lot of guys, me included, the size and heft of a 3D Mag is THE reason to own it.
I have a Mag in the 4R but carry a (similar size and heft) Streamlight SL20 at work. That SL20 has proven to be quite a useful tool in repelling dirtbags. About 7 years ago someone tried to grab my gun in a fight, and I used that SL20 to defend myself. I fractured the guy's skull with it. I've broken windows, jabbed at strange things that I didn't want to touch, and used it as a crude hammer.
Try that with a micro light.
Mine is up front:
Yeah, if I get into a hard front crash it will probably fall out and hit my legs. Ooooooo.....
Edit, ****, I hate it when I reply / quote a 2 year old thread.