Exposed Joists?

We have all of our walls staggered on a 2x6. Floor is NOT floating on a wood deck. We are considering somehow leaving the interior joists (2x6) exposed for aesthetic reasons. However, we cannot think of a good way to drywall the outside of the ceiling with a few layers and have a M-A-M with exposed interior joists. Does anyone have any experience with this? We also considering simply layering up the outside ceiling with 4 layers of drywall and leaving the interior untreated. But it seems that would negate the effects of our staggered M-A-M walls.

What is above this exposed joist ceiling? Attic? Another floor of tenants? Or is this a smaller room built within a big warehouse-type space?

This is a smaller room built within a commercial space. Above me is a wood ceiling to the outside world.

Sorry for my lacking here. Let me see if I can describe what you're doing. You have a large open commercial space. There is a wood ceiling on this old building. You want to build a smaller room within this larger space. You want to install a new ceiling on this smaller room, and would like to look at these new 2x6 joists in the new ceiling. Is that right?

Yes, that is correct. We would like to leave the joists inside the room somewhat exposed because we think it will look nice.

Thanks for the clarification. I am not in a position to discuss the in-room acoustic ramifications of such a ceiling. Someone else may have an opinion. However, why not build a decoupled deck over the top of the entire new room? You have new ceiling joists, and a plywood / drywall layer on top of them currently. You could build a 2x6 joist assembly on top of that plywood / drywall layer. Use rubber isolators under these new 2x6 joists to introduce a spring. Then top these new joists off with ply or drywall. Run the outermost wall drywall all the way to the top most surface of this new ceiling. Might that work for you? This would leave the 4 walls and ceiling with decoupled framing, and only two leaves per partition.