Dallas does it bc they get a guard to help facilitate the team while kyrie hurt and around the playoffs when kyrie comes back he would pair along kyrie nicely at the 2 guard spot sure defensively it’s not ideal for the mavs but with flag and ad defense wouldn’t be an issue, blazers do it mainly just to get off Simon’s to start scoot and they get shooting with klay which the team desperately needs at the moment also with Simon’s gone they would need another guard anyway and they get another good role player in pj which gives Portland some solid depth pieces