I went to office depot and bought green paper, went home and printed it Jeppesen 27 style in duplex, put it in a two ring binder and that's what I took to the interview. They never said anything about it either way. Also, don't forget to sign each page, that's the part they did care about.

I have Log Ten Pro which allows many different formats, not sure about logbook pro. Either way, print it, put it in a simple binder, sign and you will be good to go.