Need a clamp on chain catcher

99% of the catchers I've found online are all for braze-on front derailleurs (or they don't mention the interface). Typical braze-on catchers screw onto the front of the derailleurs, but the one clamp-on linked below has a second clamp that I'd prefer not using.

Thanks

I'm looking for something like this, but I don't want an additional clamp I also don't want to pay $54 US.