Two guns, one suppressor. Or second suppressor?

Rifle above is my current set up with a Polo K direct threaded. Recently built a pistol lower with an 11.5.

Curious to know everyone’s thoughts - go with Rearden on both and save some money, or buy a dedicated suppressor for the 11.5? I’m 50/50 either way and hoping to get insights from people that may have been in a similar spot. Thank you!