Hello!
If you log conservative you won't have any problems explaining in the interview.
You won't get invited to the the interview in the first place, if there is anything to explain. And then, it is not the interview alone that gets you the job. You also need to show your flying skills. Either in an aeroplane or in a procedures trainer or simulator. And believe me, one can tell within five minutes if someone really has the instrument practice that he claims to have!
How did people who got into Air Taxi get the P1 IFR time that is often quoted as a minimum?
Mostly by cheating, but not in such an obvious may
But seriously: This "P1 IFR time" is really only required for single-pilot operations. Many/most commercial companies operate with two pilots (at least under JAR/EU-OPS because the conditions for single-pilot instrument flying are difficult to meet and duty and rest times are severly restricted in single pilot operation). So the usual way is to get the necessary experience in the right hand seat!
Greetings, Max