i believe it was Verizon FiOS in some areas that didn’t copy protect at all. Unless someone is in your particular region with experience however, it’s all just assumptions since the MSOs are not standard–what Comcast in the Bay Area does is different than Comcast in Atlanta. Only other way to test is to get it and find out.
And yes, the copy-once flag would prevent you from compressing and sending to a tablet unless you used something similar to a slingbox…but then it’s not exactly seemless.
