Tried it today terrestrially in bright daylight (rather than dusk yesterday), trying a range of EPs.
It LOVES the Parks/Antares 25mm and 15mm "pseudo-Masuyamas" (then again, all my telescopes do), nice with the Masuyama 20, VERY nice with the Tak LE12.5 and Vixen NLV 15 (though I felt the Antares 15 was better for colour rendition, since I prefer warmer tones). The NLV needs the rubber eyecup rolled down for me too.
VERY flat field too - leaves at the edge of the field looked for all intents and purposes identical as those near the centre. Defocusing solar reflection spots on parked cars showed also very nice rings and a centred secondary, so I guess I reassembled it spot on
Have a GPD coming eventually, so the mounting issues are also sorted out.