I have Jones bars and will attest that they are very comfortable for me. The sweepback makes them feel beach cruiserish admittedly.
I put them on a 140 class full suspension bike and on my home trails they are the bananas , ----- (for me ) - but when i took the bike to Bentonville, AR for some gravity riding, the riding position --- is not good for that. Flat bars give much more control for me going downhill -- however, there are videos of guys going full send with Jones bars
The Surly Moloko's look interesting and id like to try those too ---- like having some wide aero bars. Thats another great thing about the Jones bars too -- grabbing that front loop on flat portions where you are just grinding out miles