[Dovecot] Dovecot-sieve processing optimizations

I'm working at the next part of the virtual domains mail server. I'm moving this account (raanders@acm.org is a forwarder) which has a bunch of procmail rules to file into folders.

My question is if it is more efficient is use?

if { ... } elsif { ... } elsif { ... } else

This seems to be the way many of the example scripts do it but I found at least one that used

if { ... }

if { ... }

Which is more procmail like and for me reads easier.

If not here where should I ask?

Thanks, Rod