Clubmans look like cheap crap, and clipons are too "single purpose", and no fun for daily riding, so the only people who benefit are Chiropractors.
I love my Laverda Jota adjustable bars, they look way better than clubmans, and are far easier to live with than clipons. Regardless, if you're going to use either, get some rearset's or you will not only look silly, you won't enjoy the ride. Cheers, Terry.