I actually wear my Acne Ace Stay Cash all the time, probably my most worn denim alongside JE. I will say they fit very similar at first, but JE stretches out much much more. Now that JE has just recently tapered the leg below the knee even further on the Cast 2 (just within the last few weeks) you may be just fine. Worst case is they stretch out and you pay $15ish to get them tapered.
Honestly the strategy of buying John Elliott denim as tight as you can button them (even just semi-comfortably, in some cases) works best. Coming from a guy who normally takes 29s or 30s and goes 28 for JE.