Well, I received my genuine Livescribe 3 refills from Livescribe and have compared them to the sample run of Generic Refills for Livescribe 3 that I had ordered and received this weekend.
Livescribe made an error in the technical specifications that they published for the Livescribe 3 refills… mistakes will happen 😦  They specify that the length of the Livescribe 3 refills is 67 mm (this is the industry standard for D1 refills) but they list the diameter as 2.5 mm (the industry standard is 2.3 mm).  Using this information I requested samples from my manufacturer for refills with the smooth-writing German inks that you all like in 67 x 2.5 mm ball point pen refills.
Turns out that the actual refills from Livescribe for the LS3 are closer to the industry-standard D1 refills because they are 67 mm long x 2.35 mm diameter!
I’ll be getting my Livescribe 3 pen sometime next week but I think that the 2.5 mm diameter refills are going to be too fat. Â I’ve read some comments that the Livescribe 3 refills rattle a little bit so I’m going to wait to pass judgement until I can actually try to put these refills into my new Livescribe 3 pen. Â I’ll keep you all posted!