You're going to need wheels if you want it movable with that top heavy stone on top. Otherwise, you run the risk of it tipping, and scratching the floors (and the cabinets too) if you try to move it by ''scooting'' it. If it's permanently affixed, you are required to outfit it with electrical as a safety measure to keep you from draping extesion cords everywhere.

Hollyspring - definitely agree that I'll want to have the island designed to avoid tipping; I mentioned legs on the corners to to designer so it's not just an overhang and had the appearance of furniture, but that also presents a challenge in a moveable island. The designer mentioned casters, so we'll see. I'm definitely leaning to the moveable island. Thanks for the additional considerations as I would not want the island to tip on anyone.

Have you looked on Houzz? I am considering the same approach since my aisles are narrow for a traditional island. "kitchen moveable island" turned up lots of interesting results for me. Like this:

[Eclectic Kitchen[(https://www.houzz.com/photos/eclectic-kitchen-ideas-phbr1-bp~t_709~s_2104) by Chicago Photographers Louise Lakier
That may still look too much like a cart to you. But there are lots of examples. I think this one is swanky:

[Contemporary Kitchen[(https://www.houzz.com/photos/contemporary-kitchen-ideas-phbr1-bp~t_709~s_2103) by Vancouver Design-Build Firms Kerr Construction

cucinamia - I love houzz. I also like the "swanky" one, but I'm really aiming to have a bit of storage and somehtin that looks like furniture. My problem is that I want too much. Thanks for the ideas.