On the second point, you're correct for 5.0 at the very least - I just tried it. Touching and even actively panning back and forth (never releasing) doesn't even pause the loading-bar updating, and I even discovered badges update during this as well.
For 4.x, if I remember correctly, it would pause the rendering. But I experimented a little then too, and it didn't pause the install at all - it'd just jump when you released.
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On the second point, you're correct for 5.0 at the very least - I just tried it. Touching and even actively panning back and forth (never releasing) doesn't even pause the loading-bar updating, and I even discovered badges update during this as well.
For 4.x, if I remember correctly, it would pause the rendering. But I experimented a little then too, and it didn't pause the install at all - it'd just jump when you released.