Join Date: Jun 2018
Location: Bavaria, Germany
Having fun, roughly 5500-6000 since upshifting will make me end up around 4000 where the engine has max torque.
Going through city traffic with light load only, 2500-3000 is enough and I keep her running somewhere between 2000-3000.
The engine has a rather short stroke however and does love higher revs, so I tend to keep her above 3000 when loaded since otherwise it's just too much strain.
Means I upshift to 6th gear on straight and even roads only and I don't even care about 6th (or even 5th) in hilly terrain, it's just too long.
As for break-in or generic "engine treatment", I've had my share of issues with engines that were only run at low rpm and light load because the owner wanted to "conserve them". Soot build up in the engine, gas or diesel blowby in the engine oil, etc.
The most important thing is to keep low revs while the engine is cold, but already give it moderate load so it gets to operating temperature soon.
Once it is thoroughly warm - both water AND oil, which takes its time - fully loading it and reving it from time to time will help keep the engine clean and performing. I've done that with all my engines (both cars and bikes) before and you definitely can tell a difference in engine health, especially if you service it yourself and see the condition it is in.