all BCH txs are instant. most are accepted 0-conf, this takes < 2 secs. certain sensitive ones (e.g. depositing to an exchange) require extra security for the recipient ...
but (a) the protocol allows for an insurance scheme to protect the recipient when he accepts a tx without confirmation, so he need not worry ...
(b) there are paid services that will analyze an incoming tx and let the recipient know (with insurance) if it is safe to accept. (e.g.
http://www.gap600.com)
IN SUM: ALL BCH TRANSACTIONS ARE INSTANT.
(* the riskier ones naturally require a few extra steps)
