Mandola Thomastiks are for shorter scales, that's true.
Sticking to flatwounds for a CBOM family instrument might turn out to be a bit of a niche, since the strong tone features of these instruments need roundwounds to come forward.
I used to play TIs on my smaller Dola years ago, but when I switched to the 21" OM I switched to roundwound strings.
Unison tuning is normal (also the mandola Thomastiks are unison pairs, by the way).
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