It was niche even for hybrid shielders. There is absolutely no reason to use a 2 slot Board Shield, because anyone who has room for it would use the Heavy Board Shield instead (which is already barely used). It is pretty much useless as a 2 slotter.
I was actually holding myself back by using a Board Shield. I am now being forced to use a better, 1 slot shield, such as a Heavy Round Shield, which is faster, has more resistance, and better coverage overall. I've been made better due to this change, and I hate it. I don't get shot on the sides anymore. I catch more projectiles while not holding my shield up. It's terrible. I want my board back.