Shamrock knows my thoughts but I'll post up here.
I put a set of Q4s with a 180/60 rear on my track bike, a 2006 CBR600RR. When I first got them I was shocked as to how soft the rear was. You could lay your hand on it and start to slowly put weight on it and the tire would collapse. They were every bit as soft as a Pirelli superbike SC2 tire. I actually need to talk to Dunlop and see if these need to be kept above 40 degrees like race tires. If so I'll have to bring them in for the winter.
I mounted them up and took the track bike for a quick 4 mile ride a week before my track day at NCM. My initial impressions were not that great. The front felt very heavy, and they didn't turn like you expect them to. So if anyone expects Q3 like turn in, you will be very disappointed. They are more U profile than V from what I can tell.
Came track Day I ran warmers because I have a set from using Pirelli tires. Hot pressures 34f/32r is the recommend pressures with warmers. My disappointment from my 4 mile street ride was immediately erased after the first session. They felt like great in turns, very stable. Turn is was similar to Pirelli's. Braking was great as was acceleration. Wear was significantly better than Pirelli. I was more impressed with the wear than anything else.
I've never had a Pirelli wear this well at NCM. All Pirelli tires I used for tack never looked this clean no matter what pressures or suspension tweaking I've done.
I think they are an excellent track day tire for a 600ish class bike. A 1000 ...I'm not so sure. You would probably trash the tire on day one. The rear is a single compound. Street...only if you have deep pockets. I would expect it would square off really quick.
