The problem, as I see it, is the string spacing on the nut.
I've had an SG where they put the high E string a bit too close to the edge (for you Yes fans).
Instead of taking a look at the nut they went with the Aircraft Carrier neck profile.
Nibs should not present a problem with playing unless they're FUBARed.
In all these years I've never had a problem with them, I always thought they were a classy touch.