my EDC.
In that post, the picture shows a waist pouch  the same size as an M1 pouch and what's in it.
An M-2 would be a bit smaller, an half inch each way. I haven't try it.
The M1 is small enough, for my needs. 
Too high a risk of theft in an office environment ;  that's the only way I have found to always keep my wallet etc.. on me at all times (I don't like bulging pants pockets). And it is convenient for keeping a small PSK along.