The Ducs for a while had a 6k, then 18k mile valve interval. Unfortunately, people somehow insist on going past maintenance schedules (shock - surprise - awe) and trashing their engines. Duh Gee "Must be Ducati's fault." The company made it simple and brought everything down to 6k. I'm not advocating putting off mx, but after the 1st 2 checks, the Ducati valves just don't change much, especially if you're not running track days every weekend & that's not the job for a Multi-Strada anyway.
Ducati's tried VERY hard to get past their "Italian quality" reputation. Hmmm, their MotoMarelli electronics sure seem to share a LOT with Yamaha electronics and a true Ducatisti knows what parts are shared with other manufacturer's products. They do have quality issues now & then, like their soft rocker problem in the ST4s. But then, Harley did too with the cam bushings, & how about Honda "solving" the ST13 heat issues? While Harley put the cost on customers if possible, I know Duke owners who had their bill paid long after warranty expired.
If you can do most of your own mx, the costs aren't that much different than the Jap bikes, because Ducati tends to simply re-use what they can as widely as possible across the product line. Apart from model-specific fairings and such, the machines are fairly straight-forward to learn to work on and you learn who always has parts. (Like with Triumph.)
While there are definitely horror stories out there, but I ran my ST2 as a commuter and treated it like any other bike through DC winters. I killed a deer with it and rode it for another year. It was as reliable as any Honda or Yamaha I've owned and the one bike I wish I never sold.
The new Strada looks like a winner to me. I like it.