You guys have covered pretty much everything. Fixed mount at the Nav desk with Ram in the cockpit for us as well.
This also allows you to use your eyes when speaking with or assisting the CG.
I had the experience of helping a disabled boat (lost steering for some reason), he was giving the CG bad information and the CG could not find him.
We were in the area and saw a boat that looked to be disabled about 3 miles form our location; no sails up and boobing in relativity big seas miles form any shoreline.
I made contact with the CG on VHF-16 knowing they were looking for him. As soon as I made contact with the CG the disabled boat shot off a flare confirming he was in fact the boat the CG was looking for. Had I not been in the cockpit I probably would have missed the flare.
RAM mic in cockpit allows you to see what's going on around you while communicating.
One more point, they can be used in intercom mode. Now on a small boat this may not seem like an advantage, but I can tell you, it is a real fun way to play a trick on your wife
. Hello, Hello, sailing vessel Julianna do you read me?
Sleepy wife on her 4-hour off watch comes crawling up from down below. "Did you hear that?" After she realizes what has happened she mutters something to the affect of, "I'm going to kill you.".