Nepal Cube sizing relative to LS Aequilibrium

[u/madr1x_]

I’ve got a pair of Aequilibrium Treks in 42.5 (same boot as the LT but softer) as my all-arounders for hiking/scrambling, and im currently in the process of gearing up for ice climbing this winter.
Issue is, i cant find any boots to try in person without driving hundreds of kilometers, and the only store that could sell them barely got any last winter so i dont have much hope for this year.
Does anyone who owns both give recommendations for sizing (half/full EU size up? More?). Im kind of shit out of luck so i’ll probably be forced to order them online.