I have been using it for a while now without problems. There is only one missing command that comes to mind,
!bnc, and it will be added in the next release. As far as zipscripts go - ioZS, ioSFV, and Project-ZS are supported. I will look into adding support for php_psio, if there are any others just let know.
Always nice to know someone that appreciates my work.
Update: I took a look at php_psio, the variable definitions for ioZS or Project-ZS will also work for php_psio.