Took a cruiser on a trade once, sold it a week later. I was riding it like a supersport. The crash-bar was scraping and sparking as I had it leaned beyond its limits. I went home, put it on Kijiji and sold in a week. I hated the sound of it and hated the "born to be wild" song that wouldn't escape my head!
Omnivore is correct. On a cruiser the maximum pressure point is your lower lumbar. Watch a cruiser rider and you'll see that area constantly jarring. Those discs (L1 - L5) are the discs that get herniated the most.
Sore knees on a supersport? It's because they are supporting you. Get some MSM from your local health food store and take at least 2000-4000 mg's daily. Say goodbye to joint pain!
Look on Kijiji at how many guys have bought cruisers and now have the cruisers listed as "trade for CBR or GSXR."
The Stryker is an evolution of the Warrior which is the bike of choice for supersport riders going cruiser. It's a muscle bike with an R1 frame. The midnight edition looks sick. However, I saw two on Kijiji this summer with "trade for CBR, Ninja, or GSX-R." Once you have the bloodthirst for speed, it's really hard to shake and go slow.