Hi, I am building a bike with either a Shimano Alfine or a Nexus 8R25 ("red band"). Since the frame has horizontal dropouts, I think I would be more comfortable with a rollerbrake than an Alfine with a disc, I use the front brake most of the time, the rear brake is for a backup only so I am OK with non-disc performance - and I would not need to adjust the disc brake whenever I adjust chain tension, besides the Nexus red band is easier to get in the US than the Alfine. I am planning to get the Deluxe (BR-IM70-R) version (V-brakes I don't want, mainly because sometimes I ride on dirt roads in the rain and it eats brakepads like crazy).

One thing I read on the Shimano website is that the rollerbrake may drag in cold weather due to the grease becoming solid. I would like to know if people have experienced that and at what temperatures. Weather where I live rarely if ever goes below -10 Celsius / 14 Fahrenheit, so if I am OK at those temperatures I would buy a red band with rollerbrake.