I am not aware of any generator powered blinky lights. Most of the better quality generator lights are manufactured either in Germany or Japan, where they frown on blinking lights. My personal commute bike has a Schmidt dynohub with the Supernova E3 headlight and tail-light set. I augment that with a Dinotte 140 tail light, which is battery powered, and blinks, with a battery charge lasting me over a week.
The headlight is plenty bright to see by when moving at 15mph or less.
As far as longevity, the current rig has been used as a daily commuter for 4 years with no issues.