I don't have but two naked knives, the others are a matter of preference for the particular knife. I have been around collectors enough to know they ALL are eventually taken by an item that isn't exactly perfect but still desirable. I buy things I want and then try to upgrade...I've applied that philosophy to numerous collections over the past 50 years. With Randalls I've learned it's nigh on impossible to find older sheaths. I was talking with Jason Randall a few weeks ago and he told me he thought miss-matched sheaths was a BIG collector issue. And newer guys like myself don't always know which sheath is the right one.
Example; I bought two nicely engraved, matching 1 and 2 Randalls
from the heir to an estate. Hos benefactor had purchased the pair from dealer Jack Crider was all the heir knew when I bought them.
I didn't even know who Jack Crider was at the time, and still don't know who engraved the knives. Fortunately I was able to buy new sheaths, but now I know the knives are 1969-1975 vintage and require JRB sheaths to be proper.
Hope that answers your question. Be good, be safe...and if necessary, be good 'n safe.
You are knew at this, so a bit of advice. The statement highlighted in red is important. I would recommend staying away from anything associated with Crider. He is well known as a fabricator (and seller) of altered knives to make them "one of a kind", and thus worth more money to the unsuspecting collector.
That is not to say he didn't have good pieces, but until you get your feet wet in the hobby, stick with known entities.