I love seeing barriers that want to be code gates.

If it fires, the net rez cost is only 1c. Early installs are efficient since it is more likely to trigger subroutines, whereas mid-late installs are unlikely to get the rebate. Effectiveness will depend on the format you're playing and your local meta.

Cleaver breaks for 1c. (Popular in Startup)
Paperclip breaks for 2c. (Popular in Standard)
Corroder breaks for 3c.

Synergy with Ob Superheavy Logistics to trash it (via an effect) after the runner has an efficient breaker, replacing it with a 2c asset or ice they don't have a breaker for.