These Case/Bose Collaboration Lock Back Whittlers are a little pricey but probably less then a custom would be. I prefer the Ebony with the Wharncliffe main but the Stag with the clip main is no slouch.
The primary blades are pretty stout. The ebony secondary's are a curved pen and a small clip. The stag secondary's a coping and a pen. All the secondary blades are ground very thin. All blades are flat ground stainless. ATS-34 on the stag, 154CM on the ebony, pretty much the same steel.
Whatever you decide I'd recommend at least 3 1/2" closed, preferably 3 7/8" to 4". Control is much better with the longer frame.
Happy hunting!