Being able to play two positions (or three even: LB, LW, RW) is a huge benefit for him and for the team.
For Dorgu, it gives him increased chances of playing time. For the team, it gives plenty of versatility and options.
Home against bottom of the table, or chasing game in the second half, then Dorgu at LB is an obvious choice.
Away against top of the league, or closing out a narrow lead with 10 minutes to go, or up against opposition with high quality attacking wing backs and you need at least one winger who can defend, then Dorgu on the wing is an obvious choice.