Hi Vulcan 113,
If its just for looks, fill yer boots, but if the stock bars are a little low for you -
I spent some time trying to think why I should not raise the angle of the stock bars a little on my classic. Couldn't think of a reason not to, so I slackened them off and raised them about 2" measured from the floor. No risers, just the angle changed. The only issue was the rhs mirror would not go low enough for good rear view so I adjusted the brake lever up a little to give the mirror the adjustement needed. The conical mirror bracket at the rear of the mirror is permanently fixed on the rod . The fastener behind the glass goes into a recess in the rod, so don't force it!
From an engineering point of view, I personally don't like the idea of using stock cables on non stock bars if there is the remotest chance of them binding.
I like to practice slow speed handling and the stock bar position was a little low on full lock turns, just touching my knees. I can now go round and round on full lock turns like a good'un.
Cover your tank well before you loosen the bar clamps......