Travel while H1B Non-Change of status petition active

[Iyera]

Hello All,

I graduated in December and I am currently on OPT employment period. I have an offer and will be joining the Co. in May '13. (I won't have issues with 90-day unemployment cap since I am currently employed with my University that ends a week before Paid employment in May)

The employers wish to initiate the H1B petition process for me. However, I will be travelling to my Home country in the month of April-May. Since I cannot skip this visit the Attorney suggested that they would file the H1B 'Loose' petition. I think the proper jargon is Non Change of Status (Non COS) petition (Kindly correct me if I'm wrong) which would allow me to re-enter US using my F1 visa and the OPT-EAD card.

I couldn't find much information about H1B 'Loose'/Non COS petition and its implication on Int'l travel. Can somebody confirm if such an H1B petition can

a> Allow me to re-enter the US with F1 Visa, EAD card and employment letter

b> Not result in rejection of H1B petition, like what happens with COS H1B petitions.

Thank you for your time.

Regards

[Iyera]

Would be grateful if someone can share their insight.

Regards.