Seperate tanks, what's the big deal, I see it all the time when couples share the hobby. "This is my tank with the big mean killer fish and that green one over there where you can't see the fish is my spouse's tank." Luckily my wife is the 'arts&crafts-y' type and she prefers to do her hobbies and just sit back and enjoy the serenity of my tanks. She even picked up a recliner for me to sit in when I'm just watching my tanks.
Aquascape? I'm a crypt farmer.
It's a fine line between fishing and standing on the shore looking like an idiot.
That IS an aquascape, it's titled "The Vacant Lot".