I found the RV14 wing skin a little easier to rivet than the -8, or -6 because I believe the wing skin is a little narrower from the main spar flange to the aft spar, so you don't need to have such long arms. Starting at the aft spar in my wing sling and working my way forward (down) while seated in a rolling work chair it wasn't that difficult, especially after you have a few rivets in each rib and don't have to reach in so far.
To Turner - concerning the wing skin overlap joint, I think the reason you wait until the end to rivet this overlap may be because if there's any minor misalignment up to this point, having two lines of rivets allows the most 'forgiveness' without compromising the integrity of the wing structure. It worked well for me anyway.
As far as why chamfer the inboard edge, and why didn't the original builder do that to the inboard section - this is to make it lay down nice and flush after riveting, rather having it look like a piece of bacon (I'm exaggerating). No need to do that on the underlying piece of skin, and as you say, it's cosmetic - and in the bottom of the - low - wing. I did it to all 4 sets of wings I've built because I like the look, and it only took about 60 seconds....