Yes it's normal and yes, the PEs have a very pronounced tip curvature- moreso than the vast majority of other twin tips. On my mojos, for instance, the contact patch on them in a 176 is virtually identical to the contact patch of a PE in a 179 because the tips are so massive. It also helps give the PE good soft snow performance with that fatty tip. If you held them side by side, the PE's tips go near-perpendicular to the base when compared to the low-rise mojo tips so yeah, they're more upturned than most others. Tell your family to quit sandbagging if they don't like it.