I guess the confusion here comes from the fact that you can signal BIP9 without signaling SegWit.   BIP9 signals on bit 4 and we definitely have like 80ish% of blocks in the last day or so signaling on bit 4.   SegWit readiness is signaled on bit 1 and I think that's what bc.i is tracking there.  As far as I know, in a couple hundred more blocks, the miners who signaled BIP9 are supposed to start rejecting blocks that don't signal segwit on bit 1.  We'll have to see whether all the folks who signaled BIP9 start putting bit1 and whether or not those who signaled BIP9 (bit4) actually do start orphaning blocks that don't signal bit1.

Disclaimer: this topic is confusing, I may be wrong.