I know but I dont play like that
My last run I was level 67 with Black Iron Armor, the Gargoyle Halberd +10 and the Knight Shield +10 (Which is wicked good)
Im lucky if Im under 50% equipment load
Is Uchigatana worth killing the Undead merchant for?
Never, NEVER fat roll. If your character throws himself onto the ground during rolling, you should not be wearing armor that heavy. If you don't know what I mean, just take off all your armor and weapons and try rolling, that's a light roll. Med rolling is alright, but NEVER fat roll. It's about half the distance of the other two rolls.
Yes, the Uchigatana is really good if you have the DEX for it, just make sure you stock up on the Undead Merchant's items first.