8m or 6m 10mW WSPR?

My intention was to try 8m WSPR with 10mW with ISM rules but I was concerned by the lack of monitors on 8m. 

Then it occurred to me that I could try 10mW WSPR on 6m instead during the Es season and be assured of a reasonable number of monitors.

If it works on 6m it would work on 8m in the ISM band. So, my proposal is to try 10mW WSPR on 6m instead of 8m knowing that if it works on 6m it would work licence free on 8m.