Questions about Eyelets

[CrazyCraig]

I am going to be making a few Neck knife sheaths for my Old Hickory Paring knives and wondering if I could use a rivet kit I found at a local Walmart.
Cost about 5 bucks and comes with eyelet pliers ,about 200 eyelets for 5 bucks and change.

I have Never put an eyelet in anything
I see mention of using a die but why wouldn't the Pliers suffice ?

Thanks
Craig