There are always consequences to the notwithstanding clause, too. The only way for him to get away without consequences would be to move so fast and continuously that the courts couldn’t keep up with him.

Pierre Trudeau had to invoke the War Measures Act, and that had a permanent impact on his political career.

https://www.cbc.ca/archives/just-watch-me-when-pierre-trudeau-confronted-the-october-crisis-1.4676740