What (I think) you are feeling is drive-line lash. Probably nothing to worry about, but could be and not really dx-able over the interweb.
Don't dump the throttle at low speeds. Yea easier to say than do, but use the clutch to slip it a little until you get used to it.
Not really a V-twin only occurrence, but it could be amplified without the extra cylinders, not familiar with your last choice of ride. This is my first twin as well and it took some getting used to. Kind of mechanical, and has quirks I wasn't used to. I don't notice most of them now, unless I get on something else.
If it bothers you or you think it is a real problem, have someone check it. Much easier in real life.
Ride Safe a.nd Congrats on the new ride
Some people go their whole life wondering if they made a difference, Marines don't have that problem.~ Ronald Reagan
2012 XCT, AFR+ Gen 4, Lloydz air filter. I don't equate noise with power.
I ride with the Force.