If you have driven one with the BOV blocked you may change your mind, it can ruin the part throttle response and make the car jolt badly, mainly when dropping off boost.
As there is nothing stopping the compressor, and no purge, you will get boost spiking, perhaps up to 50psi in the intake. This can cause pipes to split or pop off, as well as damaging the turbo. Just not worth it imo, other than the stupid noises that scare the chicks away...