I have an Encore in .375 and it has the swivel stud on the forend as well. I have fired it light and I have fired it heavy and I have never been bitten nor bruised. I ride my fingers right on the stud too. I think it's an old wives tale.I also notice that you have the front sling stud in the knuckle smasher position, as distinct from the Euro out of the way position. Does that cause any issues with the 375 ?
I think the real advantage is lower carrying on the shoulder in brush. Other than that it's a dead giveaway for a magnum rifle.