I did my CPL in the multi but for personal reasons. The school I use requires that to take their multi solo you have to have 25hrs dual with one of THEIR instructors or 50 hrs total multi time, I have heard a rumour that they are going to increase this to 100hrs TT.
I decided it would be better to knock the multi and CPL requirements on the head in one go rather than having to pay for an extra 25hrs at a later date to be able to take the aircraft away.