It's UI is definitely the closest you'll get to 1pass. I think a big reason I couldn't use it was the Android app is built off Electron and doesn't currently support Android fingerprinting.. So I'd have to fingerprint into 1pass to grab my Bitwarden pass..
edit: Err on my part, it's missing TouchID in OSX https://community.bitwarden.com/t/touch-id-support-for-macos...