It will sound different when idling in neutral. When you say rough idle, is it really "rough" or just a change in tone?

Also when you say clutch engaged, is that with lever pulled or not?

 

A change in noise from having the lever pulled to not is normal.

If you have the lever pulled in, the plates separate and the driven plates, hub etc will eventually spin down. With the bike in N, with the lever out, more parts are moving and will yield a different tone. This is most easily heard of a dry clutch bike, with an open cover. Lever in, there's a light jingle. Lever out in neutral you get the jingle and a regular ticking or clacking noise that's a good bit louder.

The sounds a bit blown out in this clip, but he starts it with the bike in N, lever out - and you can hear that distinct clicking. At 0:25 and about 0:30 he's pulling the the lever - note the distinct change in noise

So a change in noise is normal. But excessive noise wouldn't be.

You say it doesn't idle smoothly - but then you say the RPMs don't change which contradicts the previous. If it wasn't idling smoothly the RMPs would change, become irregular, surge etc.

Your bike is still well within the break-in period, so it will have some changes in characteristics as parts take their final set.

First thing I'd do is try to find a local with the same clutch - 696 or 796 and some more miles to have a listen to both bikes for a direct comparison. If you're real gun shy, you could have it to a shop - but you may find you're chasing a non existant trouble.

 

And strange but true DCMonster is my youtube user name.

if you're in DC, there's a lot of folks with various Monsters in the area. I'm just south in ARL.