Many years ago I was a tackle rep and Check-It Stick was one of my lines. Mr. Bingham sent a personalized Check-It Stick to each of the Texas GW's with their names engraved on the board as a gift. That is why most GW's still carry a Check-It Stick.
I thought it was a pretty smart move.
I still use an original Bingham's Check-It Stick I bought right after they came on the market back in the 80's! Bullet proof and accurate. My local game warden saw it in my boat recently and really got excited that it was an original. I'd think if the game warden likes them then that might affect my decision.
Note: The game warden will usually let you use your own rule to check a fish. If it's short then it's a stupid user problem!