As jp said, mobility in the side stance is more awkward. Also, even though your target area is smaller, two of your weapons are now further away from your opponent. From a judo perspective, you can't throw anyone like that. From a thai boxing perspective, my power shots will be slower.
i'm nobody...i'm nobody. i'm a tramp, a bum, a hobo... a boxcar and a jug of wine... but i'm a straight razor if you get to close to me.
-Charles Manson
I will punch, kick, choke, throw or joint manipulate any nationality equally without predjudice.
- Shonie Carter