Some compelling reasons below for having both OS’s installed:
From New York Times….
In an aside the decision to introduce 64-bit caught lot of chipmakers unawares….read more here
Not sure how the recent Apple iPhone launches obscured this development but this is extremely significant…Multi-Path TCP. Essentially if one connection on your iPhone/iPad drops for example your WiFi connection it will seamlessly switch to your 3G connection.
Read more here: