I have a few TC Barlows. They seem to be similar to the boy's knife. I have always liked a clip point over a spear point, but that's just me. They both preform well. But the single blade vs the two blade models is very debatable. Again, I seem to prefer the two blade patterns. The second blade really doesn't add any significant bulk or weight over the single blade. It does give you the option of being able to have a smaller blade available to use for daily simple tasks.
If you feel that the extra 1/8 inch in the width of the knife that the second blade adds is TO much bulk making it difficult to carry comfortably verses the added flexibility that a second blade will give you...Then go for the single blade option.
My first knife (folder) was and still is my folder of choice is a the three blade stockman in all sizes. So I may be in favor of the options that extra blades offer.
Best of luck to you on your choice. Let us know what you end up deciding.
Double Ott aka; Tom; TC
Vintage PUMAs from the 1970's & 1980's.. Let me know what you have, Thanks