Got my CPL at the 3rd attempt, partialled the IR. Now being paid to do a 737 type rating.
During the recruitment process, I was asked why I partialled my IR - I gave a reasoned response and the interviewers seemed quite happy with this.
Flight schools teach you to fly light aircraft. The airline I now work for obviously reccognise this fact, and judge you on how you perform in their selection process.
In my opinion, once you get a shot at a selection process, how much preparation you do for it will determine the result.