User blog comment:B214/Volume 17 spoilers./@comment-202.93.220.182-20140303015647/@comment-16281343-20140303020222

Gasper's SG has the chance of becoming the 14th Longinus is because of the abnormality around it.

Imo, FBV being a Longinus is exclusive to Gasper. If someone possesses another FBV, that will just be a normal Sacred Gear.