Solution Vs Katana

I have a pair of solutions and am thinking ab ordering a pair of Katana Laces. How does the sizing compare?

I've found that with sportiva I'm roughly within a half size of all my shoes (depending on how comfortable I want them). E.g. size 40 skwamas and solutions for bouldering or hard single pitches, 40.5 solution and TC pros for all day, etc. Check out https://mountainfootwearproject.com/ to get a more exact idea though. 

I'm the same size as my street shoes in katana lace. 

I wear my katanas a half size smaller than solutions both are sized to be used on single pitch sport and nothing much longer.

My size 42 Katanas feel a little tighter than my size 42.5 Solutions but I wear both. I think you could probably wear the same size for both but you should try them on because they do feel different.