Thanks Dean.
Didin't quite believe it was a good idea myself.
Having said that, there's loads of people who recommend atleast get a SEIFR first, then go for a MEP followed finally by the MEIFR. Now the argument is, it turns out to be more cost effective...rather than "burning gas getting to grips with the IF basics (climbs-descends,rate 1's, unusual attitudes etc)on a twin"
How much truth is in it...well one has to go through it to really understand
Maybe the people I've been talking to are the ones who get the SEIR to use it for SEP flying/timebuilding and go for the MEIR convex once they've got some IF time built up...