Disclosure - I am the Engineering Director for Leviosa Motor Shades.
Leviosa Motor Shades is an open system compatible with all major systems (ST, AHK, GH, C4, Alexa). Now 6 years old, Leviosa provides motor shades with the same fabrics as others (we all buy from same manufacturers), with the same 5-year warranty. Afterall, tubular motor technology is 50+ years old - it should no longer be so expensive. Leviosa is the affordable choice for top quality motor shades, with hardwire option or long-life power (large D-cell size that last for years - avoid those tiny AA battery systems or rechargeables that last only a few months). Shades up to 192" in width, dual shades, pocket cove systems, latest home automation - now affordable with Leviosa.
We are new to HA and have yet to integrate, but being an open system and having 100% success with all the others, we are confident in the integration. We are glad to provide our public API.