I think it's really cool that you can generate OTP's locally, and I'm a bit annoyed that companies don't let you do this in the first place, but I think it would be a bit impractical for me to actually use daily, since you'd need to figure out the secret code for each website individually, as well as which sha version they're using.

 Also, theres a pretty easy way to automatically copy the code to the clipboard, its something I use a lot in my own scripts:

printf $CODE | xclip -selection c

(using printf to remove the leading newline)