I have a dual install and I made just some harmonization in the sound files (plus adding in both some of Sailor's Steve sounds) and also harmonized the speeds of subs so I didn't have to think different each time.
Next thing I will experiment in GWX is Dantenoc's "hardcore navigation" system which removes your sub icon from the map and makes you simulate either sextant measurements if sun appears or estimate your position from course/speed if it doesn't. If I like it (looks like I will...

) I will transport it as well to NYGM.
Besides this I prefer to have the 2 installs as for me both mods have their own feel and athmosphere.