Unparallel sizing Regulus/Lace up

Hey Folks,

I can't post on Reddit (not active enough with postings) and this is the biggest English speaking community, so i hope that post fits here.

I'd like to buy Unparallel Shoes, but they're not available here in Germany (yet?) and i'm going to Order it from the Uk.
I need a Trad Shoe (Up Lace) and a stiff Boulder Shoes (Regulus). Both in the HV Version, but which Size? It looks like i dont have very flexible Feet, or i tend to Size my Street Shoes very tight. Anyway, I have:
Scarpa Instinct Lace in 41 (Trad-Fit), 40.5 would be Sport Fit. Mago, Chimera and the Vapor fit Similar. 40,5 Sport, perfect fit. Katana Lace would be 39-39,5 and i got the Skwama in 38,5 in a Boulder-Tight-AF fit. I tried the Bananafigner-Calculator, but it doesn't work for me. If i say "I got the Mago in 40.5" or "I got the Chimera in 40,5" it tells me 2 Different Sizes.
If nobody answers, i'll order 7(uk) and 7,5(uk). for both and just return the other pair. Any other recommendations are very welcome.

P.s. I'm obviously no native speaker, so you might find a few spelling mistakes.

P.p.s. yes, i don't want Adidas and I'd like to support unparallel.

Cheers.

Have you checked sizesquirrel?

For what it's worth, I love my Up Laces; I wear 43 on most shoes but the Up laces seem to have stretched a bit more and are definitely on the comfort-sized side.

Various shoes I've worn:
Street Shoe: 39-39.5
My SS is basically the actual size of my foot, plus a bit of wiggle room for wool socks.
Katana Lace (tight sport fit): 36
LS Genius (tight sport fit): 36
LS Women's Miura (almost unbearable fit, but they were free): 35
Regulus LV (tight sport fit): 38
Bouldering tight fit in the Skwama for me would probably be about 35.5-36.

The opening of the Regulus is small but stretches, I wouldn't recommend anything smaller than 1 full size down from your SS.

I have a friend who got his Regulus HVs in 0.5 sizes down from his SS, and he says they're plenty tight.

Can't say much about the UP lace, other than that I have heard good things about it.