Typical situation: Sometimes you just get pinned by a an ambitious gutter runner defying gravity from 200 miles away, or even pulled into a situation by a packmaster you thought you could shoot before it got to you. Then, as you are (hopefully) released, you might be in the midst of enemies already winding up attacks.
The problem therein is that if you had your melee weapon equipped, you would be fine, just holding right mouse button as you get up blocking the damage. However, if you had any other weapon out, you are out of luck - I opened this after being pounced, and eating an overhead attack from a chaos warrior before being able to switch from bardins steam-gun to a melee weapon to block. It feels incredibly cheap, because sometimes the time interval is so short that there is nothing you can do about it.
This would be solved by automatically re-equipping melee weapons after a pounce, which no doubt the characters would’ve reached for anyway. Should also be an advantage for chaos spawn after-grab and throw and such events.