Personally I split hour building, CPL and ME/IR between 3 separate schools due to trying to get the best deal. Subsequently it was never mentioned at any point in my airline interview which lead to a job offer.
However, I understand that some of the "big" airlines do make a point of completing modular training in one school. If I remember rightly the Flybe recruitment page made this fairly clear.
To be honest, I found the G1000 quite a big step up from flying a C150 for hour building. It did take some time to feel comfortable with how to set it up and I actually enjoyed my PA34 time (ME) more than I did the DA42 for the IR. But you can buy a 2nd hand version of Flight Sim X in Amazon for around 10 quid and there are a couple of DA42 add-ons you can purchase. Of course you can't learn IR skills on a computer game, but I used to set the simulator to thick fog and practice my G1000 instrument scan at home.