I feel you bud. I graduated with a BS in May, this will be my first real job (dream job offer though) out of college and I don't even want to think about the lost earnings and training I could have completed. I was initially told 12 weeks, which passed long ago in October. My company currently has about 1,000 people waiting on secret clearances, mostly blue collar workers like pipefitters and welders. I can't believe that they can't support their families for months/years until they get their clearance.
As for the question about the interim, my investigation was opened September 12th, and I was put on "eligibility pending (ie denied)" on October 25th. From eqip submission in August, it was 78 days for interim denial.
Really frustrating watching the average wait times get longer and longer every 3 months. I don't even know if they are in business days or calendar days. (If calendar then they sound like bullshit, considering I'm at 160 today). My current employer was sent a questionnaire back in September, have yet to hear from a BI, have an interview scheduled, have not gotten a reply from DMDC to my letter, total crickets since JPAS "eligibility pending".