Im somewhat interested in giving it a try.. but not interested enough to try on my own bike. If someone's got a spare rear VN900 rim kicking around i'll give it a go.
According from reviews i've read, the only real downside is an increased turn in effort. Apparently it takes a little more effort to get leaned over (duh) but once you have a few miles under your belt you don't even notice.
Bonus include 20,000+ mile tire life, excellent wet handling and braking, very stable to ride and dirt cheap to replace.
The General Altimax tire that seems popular for the 900 205/70R15 is $69 at Wal-Mart in the states.. the 200/70 15 Metz is $230 from Petes or $317 local installed.
All the savings can go towards medical bills when you couldent swerve around a hazard