Welcome to the traditional side of cutlery, Steve. It is a great corner of the 'net, and it is a little bit like family here. But, it is addictive, and with so many patterns, and variances of scale material, blade shapes, and makers, it can be a very expensive addiction. But not as bad as drugs or booze, and quite legal.
Getting into the barlow pattern, there is a huge wealth of them in old marques floating around flea markets, antique malls, the great bay where deals are made. There's great old names like Camillus, Schrade, Imperial, Utica, Case, and a slew of others who made the pattern. Sometimes the old ones are a better deal than the new stuff, plus you get a knife with a past. Sometimes looking at an old knife you've rescued from a flea mart, you wonder what tales the knife could tell of where it's been.
Or you can go new and instantly available with GEC, Russell's, or even the customs guys who will make you a barlow that will knock your socks off.
Carrying a traditional pocket knife is a step back n time. You won't ever be able to flip it out, there's no lock on the blade that will stand the weight of the U.S.S. Nimitz hanging on it. But you will have a knife with a choice of blades, and you will have a knife like what your great grandfathers grandfather carried back in a day when a man needed a knife for everyday living, before the invention of office cubicles.
You have a whole new universe in front of you, hope to see you around here more in the future.