The iPad Pro is big, but let’s put that in context.
The clipboard I use is 12×9 inches.
The iPad Pro is 12×8.7 inches.
A US-letter size sheet of paper is 11×8.5 inches.
(With 1-inch margins that becomes 9×6.5 inches.)
The iPad Pro screen is 10.3×7.7 inches.
The iPad Pro screen is roughly equivalent to US-letter size paper with ⅓ inch margins.