Closing: How to select the ASN.1 structure of EC-SDSA (Schnorr signature with ECC)?

Summarizing:
There is no RFC or Draft defining EC-SDSA signature algorithm support 
(like RFC 8410 for Ed25519 or RFC 9215 for GOST).

The ASN.1 encoding for EC-SDSA signature could be selected as similar to 
EC-DSA (sequence two integers), following the structure of the signature 
(sequence of octet string and integer) or raw bit string (encoded octet 
string R concatenated with encoded octet string S as EdDSA signatures). 
The latter seems to be preferable.

Thanks for help.
/Ernst.