I have a Byrd Rescue 2 (Cara Cara sized) and some Spyderco Rescue blades (Jumpmaster, Rescue Jr, UKPK Rescue, Saver Salt, Assist, D`Allara Recue) and I noticed the serrations on the Byrd are not as pointy/deep cut as the ones on the
s. The FRN handle structure is very good, the jimping along the lock bar guarantees a secure grip.
Maybe mine has a weak lock spring (no safety issue at all!) so I can open it using the blade`s weight with ease, don`t even touch the blade.
I do a lot of harder cutting tasks with it, don`t mind scratches on it, it excels at wood cutting altering between push cuts and saw-like ones and it sharpens up with ease. The small, probably 3mm straight part at the tip makes sharpening easier than the scallop on Rescue Jr/Saver Salt.
So I hope to have mentioned some details you`re interested in although someone else has to compare equal length blades.