I do know about those bikes .. At bike nite one guy had a one year old one like that and out of 400 guys less then 1/4 knew of them ...not real fast ,slower then a 600 for sure but he liked the way it handeled i looked before and said ..not support was extra hard to find
I haven't seen this bike in person but I've seen the streetfighter version or w/e. They sound like lawnmowers. They have apparently wicked bottom and midrange but weak top end compared to a 4. It's definitely gonna set you apart. But don't forget if you get one parts are going to be a pain in the ass, to get and gonna be expensive.