I don't really think 15% additional parry rate is all that bad when you compare it to other hand slots, parrying is what bucklers are pretty good at anyway, consider this among options like Bradan's Glove which gives hit + crit, Ghosthands which allows you to ignore retaliation/ripostes, and Rogue's Work Gloves, Metal Gauntlet Plus and Chimera Bands. I think it's fine to keep it at 15% personally, since it has no additional armor or stats like these other options do.
I won't budge on that one, 5% would be too low simply.
I won't budge on that one, 5% would be too low simply.