120mm is new goldilocks fract: not too small, not too big.
the 120mm in the lighter fixed tube works well with smaller more manageable mounts like em-10/11 and gp.
the fixed dew shield has advantage of not having inner liner of sliding dewshield deterioate in time.
i use the handy clamshell for ease of balancing when switching from bino-viewing to cyclops-viewing to imaging.
looking forward to thawing out next week.