I've been using the Rollei 400 IR film with a kodak wratten 89B filter (same as r72). Thus far I just do an average metering at ISO 3 and develop in xtol 1:1 for 12 minutes. The film base is extremely thin and it's tough to avoid scratching it up when loading and unloading the holder.

These are my two most recent post-worthy IR shots:

http://www.pbase.com/drpablo74/image/71558068/original

http://www.pbase.com/drpablo74/image/71622461