I did the hydraulic conversion months ago. First with an OEM slace cylinder then with an Oberon slave. I did a whole Wright up on it think. That drastically changed the amount of force needed to pull the clutch lever. The only way I could give a comparison was using a fish scale and it was about 10lb lighter rpull(if I remember correctly). The whole swap was under $200. That is a cheaper mod than just swapping out the lever with a stunt lever(which I did first. It was an RSC lever).
The main reasons I want to do the dry clutch are mostly emotional. My whole life when I pictured what a "Ducait" is I picture single sided swingarm, L twin motor, fancy components , steering damper and a dry clutch actuated with by a hydraulic assembly. The 821 doesnt have an oil cooler, I imagine that the friction and heat increase temps. Also as you said, oil contamination is less. Plus the sound, I really want the sound. It's not a cruiser bike not is it a race bike. It's a hooligan bike and to me that means a raw aggressive street presence .
The cover is off of a 1098 as are the gears but I'm told that any cover will work off of the testastretta platform. So far all the bolts seem to line up. I will be replacing my OEM clutch springs with stiffer Barnett springs soon. When i do that I will dry fit everything and assure the oil lines line up within the cover.
I broke my original pressure plate and had to switch to the Ducabike billet piece. I'm guessing that these stiffer springs will destroy the ducabike pressure plate. There is a very weak spot on the plate(I made a post about it) that I believe broke over time using the spring spacers with the judder spring kit. When I discover this to happen I will buy the dry clutch.
The quick shifter feels like I'm slipping a little between gears. I feel that has something to do with the additional back pressure caused by the judder spring. Now when input the stiffer springs in it will change the pressure rating and actuation of the slipper springs. It is all just getting confusing. I'll just go dry and be done with it.
Incase you just skipped to the bottom, the main reason I'm swapping is emotional. LOL