After calming down from deleting my character, I decided my next build is a Darkrift build. Is it any good? I know Dark Hand sucks, but I'm gonna use it for style points anyway.
I quite like the Dark Hand as a back-up on a 'shieldless' build for those clutch moments. It doesn't weigh anything and mitigates an okay amount of elemental damage across the board.
I haven't dug too deeply into the Darkdrift. It's the only katana that I haven't topped out (waiting to get everything I can on NG before trading the coil for a slab and moving on). I can't talk about the damage since it changed after the last patch. Prior to that it was pretty average amongst the katana family. You can't infuse it and I think the scaling isn't great either (D/C at +5). From what I've seen, the standard moveset is pretty much the same as the Uchi, as is the speed and stamina consumption.
It's main quirk is the blade is semi-invisible, which I'm not sure is very useful outside of PvP, if it is at all. The WA is a shield piercing move with - as I recall - a fairly hefty wind-up but pretty good tracking. Again, not sure about the damage it does.
Overall, it doesn't stand out to me amongst the katanas bar it's WA and invisible blade, but
looks badass with it.
I'm finding the Black Blade to be the hidden gem amongst katanas at the moment, despite its short blade. I switch between that and U&O for PvP.