Another thought for you....
If you intentionally go flying through this ash cloud on a revenue flight and something happens (major or minor) who is to blame for it?
Answer: The Captain.
The Captain at the end of the day takes fully "legal" responsibility for his aircraft and in a court of law he would be fined/imprisonment/loss of job.
We have no legal protection if we knowingly fly through a known ash cloud cloud. It's not the company that would get fined (hmm they would be liable as well - probably).
Food for thought - Is it worth the risk?