Have you heard of catastrophic engine failer? Don't drive , have towed to garage! Mine was IMS failure, in May last year. Paid $6k and I'm rebuilding now.
I think all crankshaft seals start leaking at a certain point. As long as the oil is not pouring out isn't this something that you could just live with until the clutch needs replacement?
Unfortunately, oil can leak from this location when the IMS flange seal starts to deteriorate. I have no idea what the difference in odds are between an RMS and a IMS problem.