Texass,
You answered my last question, too: there is no manual override in the MMII-ex! You have to set the shutter speed and aperature. However, you can deliberately ignore the "proper" setting by ignoring the little red light in the viewfinder (I think it is red--remember I am a Nikonos owner.).
This is just for your education--I am not trying to hype the Nikonos--so that when they the management of this Board ties me to a post, sticks a cigarette in my mouth and calls in the firing squad, you can step right in and take over. The MMII-ex has a film sensor that automatically "locks in" the ISO (If I wrote, "ASA", would you have understood that?) into the camera's exposure computer. The Nikonos' ISO must be set manually and that provides a very convenient way to bracket shots in the Auto setting (It is a form of aperature priority.). On the MMII-ex, you set the aperature and ignore the light when you change the exposure time in a "sorta aperature priority".
The MMII-ex's 35mm lens is just like the Nikonos' 35mm: it works fine on land. In fact, I do not like taking my "land" camera on boats and, so, I take somewhat wide angle photos with my Nikonos 35mm (The normal lens for a 35mm camera is 50mm or 55mm.). Sea and Sea gives this capability some fancy name--or, maybe they call it, "amphibian"--and I am too lazy to run to the bookshelf now to verify that. Short answer: yep!
Well, it sounds like you have a lot of swampside reading to do apres plongee. I expect that you will enjoy every minute of it. And Edge's book will make you want to take even more photos!
I hope this helped--and I hope it wasn't too long.
Joewr