If you do get one of these I'd advise you to get an extra spool or two now. I bought the similar Ultralight ASR 7000 a few years ago and two of the three plastic cassette spools need to be tapped with a hammer to remove. I'd like to buy some replacement spools but they are no longer available.
Was this the design philosophy that drove the creation of the UCL series fly wheels; an ultra light, forged, aluminum spool that provided the strength and feedback necessary while maintaining the lowest pack weight possible?