I find the Old Boy tampers to be almost useless. It's just so small, but I guess it is better than nothing in a pinch.
Amen. How they thought putting an absurdly small screw in the bottom to secure the tamper was a good design choice is beyond me. Do they seriously expect a pipe smoker to unscrew/rescrew before and after every smoke session? I carry a czech tool but leave the screw out of the bottom of the OB in the off-chance I forget/lose my czech tool. I'm not hard on my gear and the tamper has never been in danger of falling out without the screw there.
I'd love an XL version of an old boy. Maybe an inch longer and 1/8 thicker while keeping the mechanicals as-is would considerably increase the butane reservoir without having to make major changes to the lighter itself.