I'm interested in trying out Newtone strings on my ~1905 howe orme mandolinetto, which is lightly constructed and for which I use bowlback-suitable strings. Newtone makes a light set (8-11-20-30) that does not seem to be available on this side of the pond, and a medium light set (9-12-22-35). 12th Fret carries the medium light and tells me they are suitable for bowlbacks.
I've used Dogal Calace RW92b Dolce (which I like) and GHS classical (which I don't) with no structural problems. GHS are 9-13-20-32; I can't find the specs on the Calace so I don't know how heavy I've gone with those.
I'm told that Newtones have less tension at pitch than most strings because they have a round, not hexagonal core.
Anyone have any experience with the Newtone medium lights, a comparison with the tensions of the Calaces, or advice/opinions as to whether they're likely to be structurally OK?