I would carry them (watch me eat my words...)
After years of hanging around knives, I have found some general "principles" about knife values.
Knives that are often meant as "collectibles" don't often go up in price as high as you might think. Keep in mind, 600-1000 knives is a lot, and every one thinks they are going to be worth a lot of money... You have a lot of knives being stored, waiting to cash in, and this does not help the price. Limited editions runs of under 150, and in some cases only 25 are low numbered and I would think that is where the money is at.
Look at the knives that seem to gain in value.
Knives that are scarce
and have interest
. For example, an early Gunting. It was not made as a collectible knife, however has the "scarce" and the "interest" part down. Hence the price you will pay for one. Yojimbo's will be the same way. This is where the "money" is at. IMHO.
My point is... If you want to carry one of the white knives... Go for it, I know I will be carrying mine.
I look at this way... I don't buy knives as "investments." If I get lucky to own a knife of value... Then I consider it a stroke of good luck. If I want to invest, I will buy stock, bonds, oil...