There's a differentiation between TIBS[SMRT buses] and SBST.
Firstly, SMRT buses have destos on the front because the buses left
side only indicate the sv no. For SBST, only the front indicate the
svc number coz on the left side it actually shows the destination
it's heading and the roads it plies. Personally i think that SBST
side desto plates are more beneficiary as passengers are able to
confirm where they are going before boarding as the destos are
normally near the entrance. For SMRT, you have to go to the front
and wait for the info to flash.
However, SBST also have Electronic Destos on the front from their
Dennis Tridents, VSO[SBS9810X], SBS997A,SBS998Y,etc
