I was diving with a group once who insisted on coming aboard a small boat in full gear (not mine) using the swim platform, it was in pretty bad shape by the end of the day...what you suggest is fine for offshore and on a larger boat, but all of us don't dive that way all the time.
I understand that small boat tactics may differ for you. The general receational diver that dives off a commercial dive operation, will have all their gear on when coming back up the ladder. Diesel fumes and salt spray can instantly make someone nautious and sick. Keep the reg in your mouth, and the mask on your face. It minimizes the task loading for new divers.
If you wish to put your mask on your face, by all means do it. It's the most logical place to put the damn thing. But understand that for the new diver, it can lead to problems in waves, etc...
Lake diving is very different, and gear removal is part of the equation.
YMMV