cg_ops
1-Armed Bandit
I actually just went to a KTM dealer this morning to look at a 890 Duke, but they didn't have one. I'm pretty much set on the MT09 or 890 Duke.
Edit: has your 890 not been reliable?
My Duke has been much, much better than my 701 was - that thing had a lot of issues, largest of which was nuking the motor twice (1 top end, 1 bottom end) despite 1/2 interval maintenance. I believe it was partially due to riding it at big tracks like THill or Sonoma and partly due to buying a press bike... but still, 2x in under 20k miles is a bit much.
My 890 has only had a countershaft leak and a little seepage from the valve cover. Both repaired under warranty in 2 weeks at Mach 1. I don't ride like I used to - down from 15k miles/year to ~5k. So my Duke only has about 9k miles on it, but it has, otherwise, been problem free. I ride the piss out of it and I haven't had it overheat or put up any fuss.
My gold standard for reliability is Yamaha. ~100k miles between 3 different R6's, an R3, and WR250 and never had any issues that weren't directly/indirectly caused by crashing. Contrast that to the 8 or 9 issues with my 701 (2 of which were the motors) and the 2 mild issues on the 890 and it's hard for me and my anecdotal experience to say any KTM is problem free, especially if you're not a great garage mechanic, like me.
I have a friend with a 790 adventure with very low miles and a smoked clutch which is apparently a big complaint for the mid-size adventure.
Apparently you don't ride the 790 adventure like a dirt bike or normal bike where you use the clutch for low traction or uphill line picking riding. You let the traction control and slipper do the work as using the clutch heats it up and smokes it.
Apparently the 890 is a little better as they added more oil passages to keep the clutch wetter.
Does the Duke have any of the same problems?
I'm probably the worst person on earth to ask about clutch issues on the 890. I've literally never used it for shifting, only to get in/out of N at a stop. I know it seems glamorous and cool, but 1-armed life isn't all its cracked up to be 
The Rekluse has been amazing, just as it was in my 701. I do worry about clutch life when stopped, waiting for a light or for the ride to get moving. Since it is partially engaged at idle speed, it's like feathering it for prolonged periods of time. So, if I'm going to be stopped for more than 5-10 seconds, I reach over and hold the clutch until it's time to go.
As for the slipper clutch - it has come in handy with the eager quick shifting on the Duke. I have, a couple times, accidentally dropped an extra gear, coming into a corner, and was relieved to NOT get the dog-butt-wiggle as the tires fought the RPMs until they calmed their tits.

