I always felt the way you do about screen protectors. However, recently I installed a Zagg tempered glass on my iPhone 7 and have found absolutely no sensitivity loss. I play some action games on my iPhone, and any loss of sensitivity would be very noticeable for me. If it's a good tempered glass protector, then I don't see any downside of using it. The only annoyance I have found is trying to get the screen protector installed straight. I'm OCD about such things and found it difficult to get it straight, but after 3 tries I got it close enough. I'd imagine that a large screen protector for the iPad Pro would be even more difficult to install than on a small iPhone.